How to Store and Reheat
If it is fully prepared and cooked with the sauce and cheese on top, Chicken Parmesan can be refrigerated for about 3-5 days. The best way to reheat chicken parm is in the oven. At 350°F, place the chicken parm in an aluminum-covered oven-safe container with a small amount of olive oil lining the bottom and bake for about 15 minutes, or until heated through.