This classic meatball sub recipe is sure to impress your taste buds. Made with tender beef and pork meatballs, smothered in a rich marinara sauce, and topped with melted cheese, this sandwich is a crowd-pleaser. To make the meatballs, you will need ground beef, ground pork, breadcrumbs, grated Parmesan cheese, minced garlic, chopped parsley, salt, pepper, and an egg. Mix all the ingredients together in a bowl and shape them into small meatballs. Brown the meatballs in a skillet and then simmer them in marinara sauce until cooked through. To assemble the sub, slice a baguette lengthwise and spread some marinara sauce on both sides. Place the meatballs on one side of the baguette and top with shredded mozzarella cheese. Toast the sub in the oven until the cheese is melted and bubbly. Serve hot and enjoy the deliciousness of this classic meatball sub!