Meatball Sub Casserole

Ingredients

For the Casserole

• 1 loaf Italian bread or 6 sub rolls, cut into 1-inch pieces
• 2 tablespoons olive oil
• 1/2 teaspoon garlic powder
• 24 fully cooked meatballs
• 3 cups marinara sauce
• 2 cups shredded mozzarella
• 1/2 cup grated parmesan
• 1 teaspoon Italian seasoning

For Serving

• Chopped basil or parsley

Substitutions

• Use turkey, chicken, or plant-based meatballs in place of beef meatballs.
• Use a sturdy gluten-free bread, bun, flatbread, roll, or biscuit for Meatball Sub Casserole, and toast it before assembly.

Instructions

Step 1: Toast the bread

Heat the oven to 375°F. Toss bread with olive oil and garlic powder, spread in a greased 9-by-13-inch dish, and bake 8 minutes.

Step 3: Assemble

Spoon meatballs and sauce over the toasted bread. Add mozzarella, parmesan, and Italian seasoning.

Step 4: Bake

Bake uncovered for 18 to 22 minutes, until the sauce bubbles and the cheese browns in spots.

Step 5: Rest and serve

Rest 5 minutes, then garnish with basil or parsley.

How to Store Leftovers

Cool Meatball Sub Casserole promptly, cover it, and refrigerate within 2 hours. Use leftovers within 3 to 4 days and store fresh or crisp components separately.

How to Reheat

Cover Meatball Sub Casserole and warm in a 325°F oven until hot at the center. Let it rest briefly before serving.

What to Serve With It

• A green salad
• Roasted vegetables
• Garlic bread
• Fresh fruit

Common Mistakes to Avoid

• Leaving excess liquid in the filling.
• Spreading the casserole at uneven depth.
• Skipping the resting time.

Nutrition Information

Nutrition is an estimate and can vary with brands, portion size, and substitutions.

Frequently Asked Questions