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Delicious Meatball Sub Casserole with meatballs, marinara sauce, and melted cheese.

Meatball Sub Casserole

A cozy and easy casserole that combines meatballs, marinara sauce, and loads of cheese, perfectly baked for a family-friendly dinner.
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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 6 servings
Course: Dinner, Main Course
Cuisine: Comfort Food, Italian
Calories: 640
Ingredients Method Notes

Ingredients
  

Main Ingredients
  • 1 lb Frozen fully cooked meatballs Or use homemade meatballs.
  • 1 jar Marinara sauce Use your favorite brand.
  • 6 pieces Hoagie rolls or sub buns Split for filling.
  • 2 cups Mozzarella cheese, shredded Don't be shy with the amount.
  • 1 cup Provolone or parmesan cheese, optional Adds extra flavor.
Seasonings
  • 1 tsp Italian seasoning Adjust to taste.
  • 1 tsp Garlic powder Optional, for flavor enhancement.
  • 1/4 tsp Red pepper flakes If you like heat.
  • 2 tbsp Butter For toasting the bread, optional.

Method
 

Preparation
  1. Preheat your oven to 375°F (190°C).
  2. Warm marinara sauce in a saucepan and add Italian seasoning and garlic powder if desired.
  3. Add meatballs to the sauce and simmer for about 5 to 8 minutes, until hot.
  4. Split hoagie rolls and lay them in a 9x13 baking dish.
Assembly
  1. Spoon a little sauce into each roll, then tuck in the meatballs.
  2. Pour more sauce over the top and around the sides, but do not flood the bread.
  3. Cover everything with mozzarella and optionally add provolone or parmesan.
Baking
  1. Bake until the cheese is melted and bubbly, about 15 to 20 minutes.
  2. Let it sit for 5 minutes before serving to scoop cleanly.

Notes

For best results, warm the sauce first and toast the rolls lightly. You can refrigerate the assembled dish earlier in the day, then bake it when ready.