01 -
Preheat the oven to 350°F (175°C).
02 -
In a large mixing bowl, thoroughly combine shredded chicken, uncooked long-grain rice, cream of chicken soup, cream of mushroom soup, chicken broth, whole milk, garlic powder, onion powder, and ground black pepper.
03 -
Transfer the combined mixture into a greased 9×13-inch baking dish, spreading evenly.
04 -
Cover the dish tightly with aluminum foil and bake in the preheated oven for 45 minutes.
05 -
Remove foil, evenly sprinkle shredded cheddar cheese over the surface, and return to the oven for an additional 15 minutes, until the cheese is melted and the casserole is golden and bubbling.
06 -
Allow the casserole to rest for 5 minutes before serving to ensure optimal texture and ease of portioning.