01 -
Preheat oven to 350°F. Lightly coat a 9x13-inch baking dish with nonstick spray.
02 -
Steam or microwave broccoli florets until tender, about 3 to 4 minutes if using fresh. Drain excess liquid thoroughly.
03 -
In a large mixing bowl, combine cream of chicken soup, sour cream, milk, garlic powder, onion powder, salt, and black pepper. Whisk until fully blended.
04 -
Add cooked rice, shredded or chopped chicken breast, steamed broccoli, and 1 1/2 cups of shredded cheddar cheese. Fold all ingredients together to mix evenly.
05 -
Spread the mixture evenly in the prepared baking dish.
06 -
Sprinkle the remaining 1/2 cup of shredded cheddar cheese over the surface.
07 -
Bake uncovered for 25 to 30 minutes, or until casserole is heated through and the cheese is melted and golden.