Got leftovers? Toss your mini pizzas into an airtight plastic container lined with a paper towel so they don't get soggy. They'll stay fresh in the fridge for up to 4 days. If you want to keep them longer, just wrap each cooled pizza tightly in aluminum foil and slide them into a freezer bag. They'll freeze beautifully for up to 3 months. When you're ready to eat, reheat them right on the center rack of a preheated 375°F oven for 6 to 8 minutes. Please don't use the microwave. It just traps steam and turns the crust super rubbery and tough. You'll know they're ready when the cheese starts sizzling and those little pepperoni edges curl right up.