01 -
Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish with butter or non-stick spray.
02 -
If using fresh broccoli, blanch the florets in boiling water for 2-3 minutes and drain. If using frozen broccoli, thaw and pat dry.
03 -
In a large mixing bowl, combine the cooked chicken, rice, broccoli, 1 ½ cups of cheddar cheese, cream of chicken soup, milk, onion powder, garlic powder, salt, and pepper. Mix until evenly combined.
04 -
Spread the mixture evenly into the prepared baking dish. Top with the remaining ½ cup of cheddar cheese. Sprinkle breadcrumbs on top, if desired.
05 -
Bake in the preheated oven for 25-30 minutes, or until the casserole is hot and bubbly, and the cheese is melted and golden.
06 -
Let the casserole rest for 5-10 minutes before serving.