Mini Meatball Subs

1 pound ground beef

½ cup chopped onion

½ cup chopped green pepper

½ cup crushed butter-flavored crackers

1 egg

1 teaspoon Worcestershire sauce

1 teaspoon chopped garlic

1 teaspoon seasoned salt

1 teaspoon ground black pepper

1 (26.5 ounce) can spaghetti sauce

½ cup shredded mozzarella cheese

⅓ cup grated Parmesan cheese

8 dinner rolls, split

Preheat an oven to 350 degrees F (175 degrees C).

Combine ground beef, onion, green pepper, crackers, and egg in a large bowl. Season with Worcestershire sauce, garlic, seasoned salt, and pepper; mix well. Form mixture into 8 meatballs. Place meatballs in a 9x13 inch baking dish.

Bake meatballs in the preheated oven for 20 minutes. Pour the spaghetti sauce into a large saucepan; bring to a simmer over low heat. Stir baked meatballs into the simmering sauce. Do not turn oven off. Simmer sauce until meatballs are fully cooked, about 20 minutes.

Place one meatball, a sprinkle of mozzarella, a sprinkle of Parmesan, and a bit of sauce between each roll. Place sandwiches in hot oven; bake until cheeses melt, about 7 minutes.