Spicy Italian Meatball Sub

Ingredients

For the meatballs

• 2 slices crustless white bread, cut into small cubes

• ½ cup whole milk

• ½ pound ground pork

• 1 pound ground beef

• 1 medium yellow onion, minced

• 4 garlic cloves, minced

• ⅓ cup grated Parmesan cheese

• 2 large eggs + 1 egg yolk

• ⅓ cup chopped fresh parsley

• 3 tablespoons Spicy Italian seasoning

For the sauce

• 3 tablespoons extra-virgin olive oil

• ¼ cup yellow onion, minced

• 2 tablespoons tomato paste

• 1 clove garlic, minced

• Two 28-ounce cans of crushed tomatoes

• Salt and pepper, to taste

For the sandwich

• 1 French or Italian loaf

• Provolone cheese

• Parmesan cheese