This Mini Meatball Sub Is Insane!

Name: Meatball Sub
Yield: 0
Ingredients: 2 teaspoons ground beef; 1/8 teaspoon minced onion; 1/8 minced garlic; 1 parsley leaf, minced; 1/4 teaspoon breadcrumbs; 1/8 teaspoon shredded Parmesan; 1/4 teaspoon egg; Oil, for cooking; 1 tablespoon marinara; 1 sub roll; 2 teaspoons shredded cheese