Preheat your oven to 350 degrees Fahrenheit. This is crucial for ensuring your casserole bakes evenly and thoroughly. While the oven is heating, you can prepare your baking dish.
Lightly spray a 9×13 inch baking dish with nonstick cooking spray. This will help prevent sticking and make serving easier.
In a large bowl, stir together the chicken, uncooked rice, cream of chicken, sour cream, diced onion, chicken broth, diced bell pepper, fajita seasoning, and half of the cheese. Make sure everything is well combined for even flavor distribution.
Pour the mixture into the prepared dish and spread it out evenly. This step ensures that every part of the casserole cooks uniformly.
Wrap the dish tightly in aluminum foil. This helps keep moisture in while baking, allowing the flavors to meld beautifully.
Bake in the preheated oven at 350 degrees Fahrenheit for 35 to 40 minutes or until it is bubbling. You’ll know it’s done when you see the edges bubbling and the top is slightly golden.
Remove from the oven, top with the remaining cheese, and return to the oven, uncovered, until the cheese is melted, about 5 minutes. This step adds that irresistible cheesy layer!
Let rest for 5 minutes before serving. This waiting time allows the casserole to set, making it easier to cut and serve.
