Thaw the frozen cooked turkey in the refrigerator until fully thawed
Preheat the oven to 325°F
Place the turkey in a roasting pan
Add a small amount of broth or water to the pan
Cover the turkey loosely with foil
Heat until the internal temperature reaches 165°F
Check the thickest parts of the breast and thigh with a meat thermometer
Remove the foil for the last 15 to 20 minutes if you want the skin to crisp
Let the turkey rest for 15 to 20 minutes before carving
Serve immediately after resting