Classic Meatball Sub Casserole
A hearty oven-baked dish that combines frozen meatballs, marinara sauce, and sub roll pieces for a warm and generous filling.
Ingredients
Main Ingredients
- 1 lb Frozen meatballs, fully cooked and thawed if frozen
- 2 cups Marinara sauce
- 4 sub rolls Sub roll pieces, cubed
- 1.5 cups Provolone cheese slices, shredded or thinly sliced
- 3 tablespoons Garlic butter
- 1 tablespoon Italian seasoning, or to taste
- Salt, to taste after adding sauces and cheese
Instructions
Preparation
- Measure everything before you start. Thaw frozen ingredients and drain canned ingredients as appropriate. Lightly grease a 9-by-13-inch baking dish.
Cooking
- Preheat the oven to 375°F and lightly grease a 9-by-13-inch dish.
- Toss the roll pieces with the garlic butter and Italian seasoning. Toast in the dish for 5–8 minutes until lightly crisp.
- Heat the thawed, fully cooked meatballs in the marinara sauce in a saucepan until hot throughout. Spoon over the bread.
- Top with provolone and bake for 15–20 minutes, until the cheese melts and the sauce bubbles.
- Begin checking after about 20–30 minutes. Continue baking as necessary until the center is hot and the edges are bubbling.
- If the topping browns too quickly, cover loosely with foil. Rest for 5 minutes before serving.
Notes
Tips: Spread the filling evenly in the dish and check the center as well as the edges. A golden topping can be ready before the filling underneath is hot. Pair with a crisp green salad or steamed vegetables. For easier assembly, prepare components ahead and refrigerate promptly. Warm individual portions covered to help retain moisture. Refrigerate leftovers promptly and reheat until hot throughout.