Step 1

Preheat the oven to 425°F.

Step 2

Combine the meatballs and marinara sauce in a small pan and heat over medium heat.

Step 3

Split the sub rolls in half and then place onto a baking sheet. Spread lightly with butter and sprinkle garlic salt on top. Bake for 3 minutes or until lightly toasted.

Step 4

Place 4 meatballs on top of each sub, then sprinkle with mozzarella cheese. Fold the top over and bake another 3-5 minutes, or until the cheese is melted.

Step 5

Enjoy while hot!