This comforting casserole is made with tender chicken, broccoli, and a creamy sauce that is made easy with the help of a food processor. The chicken and broccoli are pulsed in the food processor to create small pieces that cook quickly and evenly. The sauce is made with cream of mushroom soup, sour cream, and cheddar cheese, and is seasoned with garlic and onion powder. Top with breadcrumbs and bake until golden brown for a delicious and satisfying meal.