BBQ Chicken Casserole 4 boneless, skinless chicken breasts 1 Can Nacho Cheese Soup 1 4-oz. jar Salsa 1 4-oz. Sour Cream 1 Onion Place chicken in a dish. Mix soup, sour cream and onion together (it will be thick). Pour mixture over chicken. Add Salsa to the top. Bake for an hour at 375.