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If you're craving a hearty, comforting dish that combines the best of a meatball sub and a casserole, this Meatball Submarine Casserole is your answer. It's got all the flavors you love in a sub sandwich but in a warm, cheesy, and easy-to-make bake. Perfect for a family dinner or a casual get-together, this recipe is sure to be a hit. Let's dive into it!
Meatball Submarine Casserole Recipe
Ingredients:
- 1 lb ground beef
- 1 cup breadcrumbs
- 1 large egg
- 1 cup marinara sauce
- 2 cups shredded mozzarella cheese
- 1 loaf cut into slices french bread
Instructions:
- Preheat oven to 375°F (190°C).
- In a mixing bowl, combine ground beef, breadcrumbs, and egg. Form into meatballs.
- In a baking dish, layer the sliced french bread.
- Place meatballs on top of the bread slices.
- Pour marinara sauce over the meatballs and bread.
- Sprinkle shredded mozzarella cheese on top.
- Bake in the preheated oven for 45 minutes or until the cheese is bubbly and golden.
What You Will Need
What you will need to make meatball submarine casserole
Ground beef: Forms the base of the meatballs, providing rich flavor and protein essential for a hearty casserole.
Breadcrumbs: Helps bind the meatballs together, adding texture and absorbing flavors from the other ingredients.
Egg: Acts as a binder for the meatballs, ensuring they hold their shape while cooking.
Marinara sauce: Adds a tangy, savory element that complements the meatballs and bread, tying the dish together.
Shredded mozzarella cheese: Melts beautifully over the casserole, creating a gooey, cheesy topping that enhances every bite.
French bread: Provides a sturdy base that soaks up the marinara sauce, adding a satisfying crunch to the casserole.
Tools and Instruments Required
What tools/instruments will be needed to make Meatball Submarine Casserole Recipe
- Mixing bowl: Essential for combining ground beef, breadcrumbs, and egg to form meatballs.
- Baking dish: Holds the layered bread, meatballs, sauce, and cheese for baking.
- Oven: Cooks the casserole, melting cheese and ensuring meatballs are fully cooked.

Meatball Submarine Casserole
Equipment
- Oven
- Baking Dish
- Mixing bowl
Ingredients:
Main Ingredients
- 1 lb Ground Beef
- 1 cup Breadcrumbs
- 1 large Egg
- 1 cup Marinara Sauce
- 2 cups Shredded Mozzarella Cheese
- 1 loaf French Bread cut into slices
Instructions:
- Preheat oven to 375°F (190°C).
- In a mixing bowl, combine ground beef, breadcrumbs, and egg. Form into meatballs.
- In a baking dish, layer the sliced French bread.
- Place meatballs on top of the bread slices.
- Pour marinara sauce over the meatballs and bread.
- Sprinkle shredded mozzarella cheese on top.
- Bake in the preheated oven for 45 minutes or until the cheese is bubbly and golden.
Notes:
Nutrition value:
Keywords:
Make Ahead and Freezing Instructions
Make Ahead Instructions
- Prepare meatballs and assemble casserole as directed.
- Cover tightly with plastic wrap or foil.
- Store in the fridge for up to 24 hours.
- When ready to bake, remove from fridge, uncover, and bake as directed.
Freezing Instructions
- Assemble casserole but do not bake.
- Wrap tightly with plastic wrap, then cover with foil.
- Label with date and freeze for up to 3 months.
- To bake, thaw in fridge overnight, then bake as directed.
For a flavor twist, try adding a layer of pesto sauce between the bread slices and meatballs. It adds a fresh, herby kick to the casserole.
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