Store your leftover Crockpot Thanksgiving Ham slices in an airtight container and keep them in the refrigerator for up to 4 days. If you want to freeze them, wrap each portion tightly in freezer paper and place the slices in a freezer bag for up to 2 months. When you’re ready to enjoy them again, thaw the frozen slices overnight in the refrigerator. Reheat the ham covered at 325°F for about 15 to 20 minutes, and add 2 tablespoons of reserved glaze or cooking juices to help keep the slices moist. If you notice a sour smell, a slimy texture, or any unusual discoloration after storage, it’s best to discard the leftovers.