So simple to make! Use my recipe for Cheesy Meatballs and Simple Pasta Sauce and you have it! Just add sub rolls and more mozzarella cheese!
Preheat oven to 350. Brush rolls all over with melted butter. Place partially split sub rolls, open side down, on a baking sheet and heat until lightly browned. Remove from oven, top with warm meatballs and hot pasta sauce. Sprinkle tops with shredded mozzarella cheese and eat.