These classic meatball subs are a delicious and satisfying meal that can be easily made using a Thermomix. The meatballs are made with a combination of ground beef, breadcrumbs, Parmesan cheese, and a variety of herbs and spices. They are then cooked in a rich tomato sauce until tender and flavorful. To assemble the subs, you will need some crusty sub rolls, mozzarella cheese, and additional tomato sauce. Simply slice the rolls in half, spoon some tomato sauce onto the bottom half, add a few meatballs, and top with mozzarella cheese. Place the subs under the broiler until the cheese is melted and bubbly. Serve hot and enjoy the gooey, meaty goodness of these classic meatball subs!