This Dump and Bake Meatball Casserole recipe is an effortless meal combining tender meatballs, pasta, marinara sauce, and melted cheese in one dish. Perfect for busy weeknights, it requires no pre-cooking—just dump everything in and bake! Keywords: dump and bake meatball casserole, easy meatball casserole, baked pasta and meatballs, one-pan casserole.