Keep the party fueled and fun with these awesome mini sub sandwiches! Make zesty meatballs by combining ground beef with onion, green pepper, crackers and egg. Mix in Worcestershire sauce, garlic, seasoned salt and black pepper. Form into meatballs, bake, then add to simmering spaghetti sauce. Open dinner rolls and add a big meatball, sprinkle with mozzarella and Parmesan cheeses, dollop with sauce and bake until cheese melts, then score a flavor touchdown with the crowd! Get the recipe for Mini Meatball Subs.