Chicken Enchilada Casserole

"This flavor-packed Chicken Enchilada Casserole Recipe comes together quickly with layers of store-bought rotisserie chicken, tortillas, onions, garlic, and black beans, all smothered in enchilada sauce and topped with melted cheddar and Monterey Jack cheese. It is like chicken enchiladas in casserole form. Dress it with a little mango salsa, fresh cilantro, and chopped avocado, and it is beautiful and tasty enough for company. An amazingly delicious layered Chicken Enchilada Casserole with rotisserie chicken, flour or corn tortillas, enchilada sauce, black beans, and melty cheese. Customize it by topping it with your favorite salsa, sour cream, cilantro, chopped tomatoes, or chopped avocados. "