While the meatballs are baking, spray your casserole dish with oil or cooking spray.
Place the buns in the prepared dish & line the inside of each bun with a slice of provolone cheese.
Once the meatballs are cooked, place several in each bun in between the cheese. (*note- do not turn off your oven after baking the meatballs)
Spoon the marinara sauce over the meatballs & then top each sandwich with a handful of mozzarella cheese.
Bake in the 375-degree F oven for 10-15 minutes or until the cheese is melted.
*Opt – broil for 2-5 minutes to brown the cheese before serving.
Sprinkle with Parmesan cheese & parsley prior to serving.
Notes
To make these in the air fryer – cook the meatballs at 390 for 15 minutes. Assemble the sandwiches, then coo for another 3-5 minutes or until cheese is melted.

The Ultimate Banana Split Milkshake: A 5-Star Dessert in a Glass
Banana and Cheese Puff Pastry with Dark Chocolate Dip
Easy orange Zucchini Heaven Bread
Puff pastry cones: a treat that will delight the whole family!
Raspberry Cake with Lemon Buttercream
Two years after the heartbreak of her divorce, Valerie Bertinelli has found love again at 63… better sit down before you see her new man, because you’ll recognize him









