In a large mixing bowl, combine the cooked turkey, uncooked rice, chicken broth, frozen peas, shredded cheddar cheese, cream of mushroom soup, salt, and black pepper.
Transfer the mixture to a baking dish and spread it out evenly.
Cover the baking dish with aluminum foil and bake for 30 minutes, or until the rice is cooked and the casserole is bubbly.
Remove the foil and bake for an additional 5-10 minutes to brown the top.
Let the casserole cool for a few minutes before serving.
Notes:
This casserole is a great way to use up leftover turkey. You can also substitute chicken if you prefer.