Preheat the oven to 350°F
Remove the casserole from the refrigerator
Cover the casserole dish with foil
Add a small amount of water or broth if it seems dry
Place the casserole in the oven
Heat for 20 to 30 minutes
Check the center for even heating
Remove the foil for the last 5 to 10 minutes if you want a crisp top
Use a food thermometer to confirm the center reaches 165°F
Let it rest for a few minutes before serving