Chicken Alfredo Bake
A bubbling pan of Chicken Alfredo Bake can turn a plain Tuesday into the kind of dinner everyone remembers. The first time I made this creamy chicken casserole, I left it in the oven a little too long and the edges got darker than I wanted. It was still the first dish to disappear. That’s when I realized this recipe could handle a few small mistakes without ruining dinner. Since then I’ve kept this easy chicken alfredo bake in my regular dinner rotation because it uses simple ingredients and doesn’t need much fuss.
I’ve made it for nights when the fridge looked nearly empty and for family meals when I needed something everyone would actually eat. The creamy sauce gets into every piece of penne while the mozzarella turns golden on top. And that first spoonful? So good. What I love most about a baked chicken Alfredo pasta dish is how little work happens once everything goes into the oven.
You can get the chicken and sauce ready while the penne boils and then let the heat finish the job. If you enjoy creamy chicken dinners, our White Chicken Lasagna Soup is another good one to keep around. But when I want something with a golden cheese crust and enough leftovers for lunch, this is the dish I make.
Why This Recipe Works
The key to a creamy Chicken Alfredo Bake is stopping the penne about 2 minutes before it’s fully tender. That extra bite lets the pasta soak up some Alfredo sauce as it bakes at 375°F without turning mushy.
And freshly grated Parmigiano Reggiano melts into warm cream more smoothly than most packaged grated cheeses. Keeping the oven at 375°F gives the mozzarella time to melt and brown without drying the chicken.
If you like rich chicken dishes with a creamy base, try our Chicken Pot Pie Soup another night.
Ingredients
- penne: Use dry ridged penne and boil until 2 minutes short of al dente so it finishes cooking in the oven.
- boneless skinless chicken breast: Cut into roughly 1-inch pieces and sear until golden and fully cooked to 165°F.
- kosher salt: Use 1 tablespoon to season the boiling water and the remaining 1/2 teaspoon for the chicken.
- freshly ground black pepper: Sprinkle over the chicken before searing to add a gentle peppery flavor.
- dried Italian seasoning: Coat the chicken pieces before searing for a subtle mix of dried herbs.
- extra virgin olive oil: Use 1 tablespoon to sear the chicken and 1 teaspoon to lightly coat the baking dish.
- unsalted butter: Melt gently to form the rich base of the garlic Parmesan Alfredo sauce.
- garlic cloves: Peel and finely mince before briefly cooking in melted butter for a sweet garlic aroma.
- heavy whipping cream: Use full-fat cream to create a thick and silky Alfredo sauce that stays creamy during baking.
- whole milk: Blend with the heavy cream to loosen the sauce slightly so the penne can absorb moisture while baking.
- Parmigiano Reggiano: Grate finely from a block and whisk into the warm cream to thicken the sauce and add savory flavor.
- whole-milk low-moisture mozzarella: Scatter over the casserole before baking to create a stretchy melted cheese layer with golden patches.
- fresh flat-leaf parsley: Chop just before serving and scatter over the baked casserole for a fresh herbal finish.
Kitchen Equipment
- Large 6-quart stockpot: A 6-quart stockpot gives 12 ounces of penne enough room to boil without clumping, while a smaller pot may cause sticking and uneven cooking.
- 12-inch heavy-bottomed skillet: A 12-inch cast iron or stainless steel skillet gives the chicken enough contact with the hot surface to brown, while a small skillet traps moisture and causes steaming.
- Medium 2-quart saucepan: A heavy-bottomed 2-quart saucepan heats the cream and Parmesan evenly so the sauce stays smooth, while a thin saucepan can scorch dairy near the bottom.
- 9 by 13 inch baking dish: A 9 by 13 inch ceramic or glass baking dish with sides at least 2 inches high holds the casserole in a shallow layer, while a smaller dish can cause overflow and uneven heating.
- Colander: A sturdy colander with small drainage holes lets the penne drain fast without falling through, while an oversized mesh may let smaller pasta pieces escape.
- Balloon whisk: A medium balloon whisk with flexible stainless steel wires blends melted Parmesan into cream smoothly, while a stiff flat utensil may leave cheese clumps.
- Digital instant-read thermometer: A digital thermometer with a narrow probe checks chicken and casserole temperatures accurately to 165°F, while relying only on color can miss an underheated center.
- Sharp chef’s knife and cutting board: An 8-inch chef’s knife and a stable nonporous cutting board help cut the chicken into even pieces, while a dull blade or sliding board makes accurate cutting harder.
- Box grater: A four-sided box grater with fine holes creates small Parmesan shreds that melt quickly, while thick chunks can leave the sauce grainy.
- Wide serving spoon: A broad serving spoon lifts a full portion with its melted cheese topping intact, while a narrow spoon can break apart the pasta layer.
How to Make It
Step 1: Boil the penne until slightly firm
Fill a large pot with 4 quarts of water and bring it to a full boil over high heat. Add 1 tablespoon of the measured kosher salt and stir in 12 ounces of dry penne. Cook for 2 minutes less than the package’s usual al dente time, which is about 8 minutes for many brands. Stir the penne twice during cooking so the tubes don’t stick together.
Then drain it well without rinsing. Keep the penne slightly firm because it’ll soak up more sauce as the casserole bakes at 375°F. Look for pasta that has softened on the outside but still feels a little firm when bitten. That’s what you want.
If the penne reaches its usual tender stage now, the oven can make it mushy. That short boil leaves room for the pasta to finish cooking in the sauce.
Tip: Choose ridged penne instead of smooth penne because the grooves catch more Alfredo sauce. Check the package for a 10 to 12 minute boiling time.
Step 2: Cut and sear the chicken breast
While the penne boils, cut 1 pound of boneless skinless chicken breast into roughly 1-inch pieces. Pat the pieces dry and season them with the remaining 1/2 teaspoon kosher salt, 1/2 teaspoon black pepper and 1 teaspoon Italian seasoning. Heat 1 tablespoon extra virgin olive oil in a 12-inch skillet over medium-high heat until it reaches about 400°F. Add the chicken in one loose layer and sear for 3 to 4 minutes on the first side.
Turn each piece and cook for another 3 to 4 minutes. Check that the thickest piece reaches 165°F before removing the chicken. You’ll see golden edges and a few darker spots where the chicken touched the pan. The centers should be fully opaque and the juices clear.
Don’t leave it in the pan once it reaches 165°F because extra heat can dry out the small pieces. A brief sear builds flavor without drying the chicken.
Tip: If your skillet measures less than 12 inches, sear the chicken in two batches. Crowding prevents the golden crust from forming.
Step 3: Whisk the creamy Parmesan Alfredo sauce
Melt 3 tablespoons unsalted butter in a medium saucepan over medium-low heat, about 3 on a 10-point dial. Add 4 finely minced garlic cloves and stir for 45 to 60 seconds until fragrant. Pour in 1 1/2 cups heavy whipping cream and 1/2 cup whole milk. Stir and let the mixture reach a gentle simmer for 3 to 4 minutes.
Lower the heat and whisk in 1 cup freshly grated Parmigiano Reggiano in small handfuls. Keep whisking for another 2 minutes until the cheese melts and the sauce coats a spoon. Don’t let it boil hard. The sauce should look smooth and pale ivory with tiny garlic flecks throughout.
It should flow slowly rather than sit in thick clumps. If the heat climbs too high, the fat can split from the cheese. Gentle heat keeps the cream and Parmesan smooth.
Tip: Grate Parmigiano Reggiano from a block just before cooking. Pregrated cheese often contains anti-caking agents that can leave little grainy bits.
Step 4: Coat the penne and chicken with Alfredo sauce
Heat the oven to 375°F and lightly coat a 9 by 13 inch baking dish with 1 teaspoon extra virgin olive oil. Add the drained penne and seared chicken to the dish. Pour the warm Alfredo sauce over everything and fold gently from the bottom with a large spoon until each piece has a thin creamy coat. Spread the mixture into an even layer without pressing it down.
Then scatter 1 1/2 cups shredded whole-milk low-moisture mozzarella over the top. Leave a few penne ends peeking through so their edges can turn golden. You’ll notice sauce collecting lightly between the penne tubes while the chicken stays visible in small patches. The mozzarella should form a loose uneven layer rather than a packed sheet.
If the casserole looks dry before baking, the penne will absorb too much sauce. An even coating keeps the filling creamy in the oven.
Tip: Use a 9 by 13 inch dish with sides at least 2 inches high. A smaller dish traps the filling in a deep layer that heats unevenly.
Step 5: Bake until the mozzarella melts and turns golden
Place the assembled casserole on the middle rack of the 375°F oven and bake uncovered for 18 to 22 minutes. Watch the top during the final 5 minutes. The mozzarella should melt into an uneven layer with golden spots while the sauce bubbles gently around the edges. Check that the center reaches at least 165°F.
If you want a deeper golden top, switch to the broiler for 1 to 2 minutes and watch it the entire time. (A few extra minutes can turn those pretty golden patches dark fast. ) When the cheese stretches and the edges bubble, take the dish out. The penne will have softened further and the sauce should still look creamy beneath the topping.
Leave it too long and you’ll lose that soft center. Baking uncovered melts the cheese while the pasta finishes absorbing sauce.
Tip: Rotate the dish halfway through baking if your oven browns more strongly on one side. This helps prevent one corner from drying out.
Step 6: Rest and serve the creamy chicken pasta
Set the casserole aside for 5 minutes after it leaves the 375°F oven. Then sprinkle 2 tablespoons finely chopped fresh flat-leaf parsley over the surface. Use a wide serving spoon to lift one quarter of the filling onto a white dinner plate. Scoop from the bottom so each portion gets the penne, chicken and creamy sauce beneath the cheese.
Work slowly because the filling will still be hot. Don’t stir the whole casserole before serving or you’ll lose the golden top that makes each portion look so inviting. The melted mozzarella should stretch a little as the portion lifts. Inside you’ll see tender penne and golden chicken pieces held together by thick sauce.
If you serve it at once, the sauce can spread across the plate. A 5-minute rest gives the sauce time to settle.
Tip: For a neat serving, divide the casserole into four loose sections before scooping. This helps each plate get a fair share of chicken.
Pro Tips
- Boil the penne for 2 minutes less than the package’s al dente time because it continues to soften while the casserole bakes.
- Choose freshly grated Parmigiano Reggiano instead of shelf-stable powdered Parmesan. One cup melts more smoothly into warm cream and gives the sauce a richer flavor.
- Keep the Alfredo sauce at a gentle simmer over medium-low heat. If large bubbles appear, lower the heat before adding the Parmesan.
- Use a 9 by 13 inch baking dish with sides at least 2 inches high. A smaller dish can trap moisture and leave the middle too soft.
- Cut the chicken breast into pieces roughly 1 inch wide so they sear evenly. Check the thickest piece with a thermometer for 165°F.
- Bake the casserole uncovered at 375°F for 18 to 22 minutes. Covering it traps steam and makes the mozzarella topping less golden.
- For extra color, broil the melted cheese for 1 to 2 minutes while watching closely. Remove the dish when small amber patches appear.
- Let the casserole rest for 5 minutes before serving. The sauce will thicken slightly and cling better to each piece of penne.
- For a broccoli chicken Alfredo casserole, add 1 cup of small steamed broccoli florets before baking. Drain them well and reduce the penne to 10 ounces to keep the dish balanced.
- For a spinach and garlic version, fold 1 cup of thawed and thoroughly squeezed frozen spinach into the Alfredo sauce before combining it with the chicken and penne.
- For a spicy Alfredo pasta bake, add 1/2 teaspoon crushed red pepper flakes to the garlic butter and finish with a light sprinkle of smoked paprika.
- For a mushroom chicken Alfredo casserole, sauté 8 ounces of sliced cremini mushrooms until their moisture evaporates. Fold them into the pasta mixture before adding the mozzarella topping.
Substitutions & Variations
- penne: 12 ounces gluten-free penne made from brown rice and corn. Use the same weight and boil for 2 minutes less than the package’s al dente time. Gluten-free pasta can soften faster during baking, so check it after 18 minutes in the oven.
- heavy whipping cream and whole milk: 1 1/2 cups unsweetened dairy-free cooking cream and 1/2 cup unsweetened oat milk. Use equal amounts and replace both cheeses with dairy-free alternatives. The sauce may be thinner and less rich, so simmer it for 2 extra minutes before assembling. Choose plain products without added sugar or vanilla.
- boneless skinless chicken breast: 1 pound boneless skinless chicken thighs. Cut into 1-inch pieces and sear until the centers reach at least 165°F. Thighs have a richer flavor and stay juicy during baking. If you prefer another creamy chicken dinner, try our Creamy Chicken Noodle Soup.
- Parmigiano Reggiano: 1 cup freshly grated Grana Padano. Use the same amount and whisk it into warm cream over medium-low heat. Grana Padano has a slightly milder and sweeter flavor, but it still produces a smooth sauce. Avoid pre-shredded blends because they may melt unevenly.
- whole-milk low-moisture mozzarella: 1 1/2 cups shredded provolone. Use an equal amount of low-moisture provolone for a stronger and slightly tangier cheese topping. It melts smoothly but may brown faster, so check the casserole after 16 minutes. The original recipe contains no eggs, so no egg replacement is needed.
Storage Instructions
Let leftover Chicken Alfredo Bake cool briefly and transfer it to shallow airtight containers within 2 hours of cooking. Store it in the refrigerator at 40°F or below for 3 to 4 days. For longer storage, portion the casserole into freezer-safe containers and wrap them tightly to prevent freezer burn. Freeze for up to 2 months for the best texture.
The pasta will become a little softer after thawing and the dairy sauce may separate slightly. To reheat, add 1 to 2 tablespoons of whole milk per serving and cover loosely. Warm in a 350°F oven for approximately 15 to 25 minutes or until the center reaches 165°F. You can also microwave individual portions in 60-second intervals and stir between rounds until fully heated.
Discard leftovers with a sour smell, visible mold or unusual discoloration. Don’t rely on smell alone to judge food safety.
Chicken Alfredo Bake
Ingredients
Method
- Fill a large pot with 4 quarts of water and bring it to a full boil over high heat. Add 1 tablespoon of the measured kosher salt and stir in 12 ounces of dry penne. Cook for 2 minutes less than the package’s usual al dente time, which is about 8 minutes for many brands. Stir the penne twice during cooking so the tubes don’t stick together. Then drain it well without rinsing. Keep the penne slightly firm because it’ll soak up more sauce as the casserole bakes at 375°F. Look for pasta that has softened on the outside but still feels a little firm when bitten. That’s what you want. If the penne reaches its usual tender stage now, the oven can make it mushy. That short boil leaves room for the pasta to finish cooking in the sauce.
- While the penne boils, cut 1 pound of boneless skinless chicken breast into roughly 1-inch pieces. Pat the pieces dry and season them with the remaining 1/2 teaspoon kosher salt, 1/2 teaspoon black pepper and 1 teaspoon Italian seasoning. Heat 1 tablespoon extra virgin olive oil in a 12-inch skillet over medium-high heat until it reaches about 400°F. Add the chicken in one loose layer and sear for 3 to 4 minutes on the first side. Turn each piece and cook for another 3 to 4 minutes. Check that the thickest piece reaches 165°F before removing the chicken. You’ll see golden edges and a few darker spots where the chicken touched the pan. The centers should be fully opaque and the juices clear. Don’t leave it in the pan once it reaches 165°F because extra heat can dry out the small pieces. A brief sear builds flavor without drying the chicken.
- Melt 3 tablespoons unsalted butter in a medium saucepan over medium-low heat, about 3 on a 10-point dial. Add 4 finely minced garlic cloves and stir for 45 to 60 seconds until fragrant. Pour in 1 1/2 cups heavy whipping cream and 1/2 cup whole milk. Stir and let the mixture reach a gentle simmer for 3 to 4 minutes. Lower the heat and whisk in 1 cup freshly grated Parmigiano Reggiano in small handfuls. Keep whisking for another 2 minutes until the cheese melts and the sauce coats a spoon. Don’t let it boil hard. The sauce should look smooth and pale ivory with tiny garlic flecks throughout. It should flow slowly rather than sit in thick clumps. If the heat climbs too high, the fat can split from the cheese. Gentle heat keeps the cream and Parmesan smooth.
- Heat the oven to 375°F and lightly coat a 9 by 13 inch baking dish with 1 teaspoon extra virgin olive oil. Add the drained penne and seared chicken to the dish. Pour the warm Alfredo sauce over everything and fold gently from the bottom with a large spoon until each piece has a thin creamy coat. Spread the mixture into an even layer without pressing it down. Then scatter 1 1/2 cups shredded whole-milk low-moisture mozzarella over the top. Leave a few penne ends peeking through so their edges can turn golden. You’ll notice sauce collecting lightly between the penne tubes while the chicken stays visible in small patches. The mozzarella should form a loose uneven layer rather than a packed sheet. If the casserole looks dry before baking, the penne will absorb too much sauce. An even coating keeps the filling creamy in the oven.
- Place the assembled casserole on the middle rack of the 375°F oven and bake uncovered for 18 to 22 minutes. Watch the top during the final 5 minutes. The mozzarella should melt into an uneven layer with golden spots while the sauce bubbles gently around the edges. Check that the center reaches at least 165°F. If you want a deeper golden top, switch to the broiler for 1 to 2 minutes and watch it the entire time. (A few extra minutes can turn those pretty golden patches dark fast.) When the cheese stretches and the edges bubble, take the dish out. The penne will have softened further and the sauce should still look creamy beneath the topping. Leave it too long and you’ll lose that soft center. Baking uncovered melts the cheese while the pasta finishes absorbing sauce.
- Set the casserole aside for 5 minutes after it leaves the 375°F oven. Then sprinkle 2 tablespoons finely chopped fresh flat-leaf parsley over the surface. Use a wide serving spoon to lift one quarter of the filling onto a white dinner plate. Scoop from the bottom so each portion gets the penne, chicken and creamy sauce beneath the cheese. Work slowly because the filling will still be hot. Don’t stir the whole casserole before serving or you’ll lose the golden top that makes each portion look so inviting. The melted mozzarella should stretch a little as the portion lifts. Inside you’ll see tender penne and golden chicken pieces held together by thick sauce. If you serve it at once, the sauce can spread across the plate. A 5-minute rest gives the sauce time to settle.
Notes
Frequently Asked Questions
Yes, you can assemble the casserole up to 24 hours ahead and keep it covered in the refrigerator at 40°F or below. Let the sauce cool slightly before mixing it with the penne and chicken, then refrigerate promptly. When you’re ready, bake it at 375°F for about 25 to 35 minutes until the center reaches 165°F.
The most common causes are pasta that wasn’t drained well and cheese that released too much moisture. Use low-moisture mozzarella and simmer the Alfredo sauce until it coats the back of a spoon. If you add vegetables, drain them thoroughly before mixing. After baking, let the casserole stand for 5 to 10 minutes so the sauce settles.
Yes, replace the homemade sauce with approximately 2 1/2 cups of prepared Alfredo sauce. Choose a thick refrigerated variety if possible because thinner jarred sauces may produce a looser casserole. Warm the sauce gently before combining it with the pasta and chicken. Bake at 375°F until bubbling and heated through to 165°F.
Store leftovers in a sealed shallow container for up to 3 to 4 days at 40°F or below. Refrigerate within 2 hours after cooking and don’t leave portions sitting out during a long meal. For the best texture, reheat only what you’ll eat and add a small splash of milk to loosen the sauce.
Yes, double every ingredient and divide the mixture between two 9 by 13 inch baking dishes. Bake both at 375°F and rotate their positions halfway through for more even heating. Expect approximately 25 to 35 minutes depending on your oven. Check that each casserole reaches 165°F in the center before serving.
Yes, although dairy-based sauces can become slightly grainy after thawing. Freeze the cooled casserole in tightly wrapped portions for up to 2 months for the best quality. Thaw overnight in the refrigerator and reheat covered at 350°F with 1 to 2 tablespoons of milk per serving. Make sure the center reaches 165°F.
A crisp green salad with lemon dressing helps balance the rich Parmesan sauce. You could also roast 1 pound of asparagus at 425°F for approximately 12 to 15 minutes while preparing the pasta. For a larger dinner, serve small portions of the casserole with steamed broccoli or warm garlic bread.
Final Thoughts
The nights when everyone wants something warm and filling are when I’m most glad I have this Chicken Alfredo Bake recipe. I wish I’d figured out sooner how much difference slightly firm penne and a quick oven bake make.
This easy chicken alfredo bake gives you creamy pasta and tender chicken beneath a golden cheese topping without making dinner feel like a big project. If this chicken alfredo bake recipe becomes a regular at your table, you might also enjoy our Crockpot Cajun Chicken Pasta or White Chicken Lasagna Soup. And leave a comment to tell me how yours turned out.
I love hearing what you made.
Alfredo sauce takes its name from Alfredo di Lelio, a Roman restaurateur known for serving fettuccine with butter and Parmesan. The cream-based version became especially popular in American kitchens. Adding chicken and baking the pasta with mozzarella turns that classic idea into a hearty family casserole.
