This chicken broccoli rice cheese casserole combines tender chicken, fluffy rice, broccoli florets, creamy homemade sauce, and melted cheddar cheese into a warm, cozy dinner perfect for busy weeknights and family meals.
Preheat the oven to 375°F and grease a 9x13-inch baking dish.
In a small saucepan over medium heat, melt the butter.
Whisk in the flour and cook for about 1 minute until lightly golden.
Slowly whisk in the chicken broth and milk until smooth.
Cook while whisking until the sauce thickens slightly.
Stir in sour cream, garlic powder, onion powder, salt, black pepper, and paprika.
In a large bowl, combine cooked chicken, cooked rice, broccoli florets, 1 cup shredded cheddar cheese, and the creamy sauce.
Stir until everything is evenly coated and combined.
Spread the mixture evenly into the prepared baking dish.
Sprinkle the remaining 1/2 cup cheddar cheese evenly over the top.
Cover the casserole and bake for 20 minutes.
Remove the cover and continue baking for 10 minutes until hot, bubbly, and lightly golden.
Let the casserole rest for 5 minutes before serving warm.
Notes
Drain frozen broccoli well before mixing to avoid excess moisture. Rotisserie chicken and microwave rice work perfectly for faster prep. Let the casserole rest for 5 minutes after baking so the creamy filling can settle before serving.