Easy Meatball Sub Casserole Recipe for Dinner
This easy Meatball Sub Casserole combines saucy meatballs, toasted bread, melted mozzarella, and Italian seasoning in one baking dish. With frozen meatballs and jarred marinara, it makes a satisfying weeknight dinner with less assembly and cleanup.
Essential Concepts
Use sturdy bread, warm the meatballs first, add mozzarella near the end, and let the casserole rest before serving.