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Preheat your oven to 400°F. Line a large baking sheet with parchment paper for easy cleanup.

In a large mixing bowl, combine the ground beef, breadcrumbs, egg, milk, grated Parmesan cheese, garlic powder, onion powder, dried oregano, salt, and black pepper. Mix gently with your hands until just combined, being careful not to overmix.

Roll the mixture into 16-20 meatballs, about 1 1/2 inches in diameter. Place them in a single layer on the prepared baking sheet.

Bake the meatballs for 15-20 minutes, or until they are browned and cooked through. An instant-read thermometer inserted into the center of a meatball should read 160°F.

While the meatballs are baking, pour the marinara sauce into a medium saucepan and heat over medium-low heat until simmering gently. Add the cooked meatballs to the sauce and stir to coat. Keep warm.

Split the hoagie rolls lengthwise, cutting about three-quarters of the way through so they remain hinged. Brush the insides of the rolls with melted butter.

Carefully arrange 4-5 saucy meatballs inside each hoagie roll. Top the meatballs with two slices of provolone cheese and a generous sprinkle of shredded mozzarella cheese.

Place the assembled subs on a clean baking sheet. Bake for 5-7 minutes, or until the cheese is melted and bubbly and the rolls are lightly toasted.

Remove from the oven, garnish with fresh chopped parsley, and serve immediately.


Preheat your oven to 400°F. Line a large baking sheet with parchment paper for easy cleanup.

In a large mixing bowl, combine the ground beef, breadcrumbs, egg, milk, grated Parmesan cheese, garlic powder, onion powder, dried oregano, salt, and black pepper. Mix gently with your hands until just combined, being careful not to overmix.

Roll the mixture into 16-20 meatballs, about 1 1/2 inches in diameter. Place them in a single layer on the prepared baking sheet.

Bake the meatballs for 15-20 minutes, or until they are browned and cooked through. An instant-read thermometer inserted into the center of a meatball should read 160°F.

While the meatballs are baking, pour the marinara sauce into a medium saucepan and heat over medium-low heat until simmering gently. Add the cooked meatballs to the sauce and stir to coat. Keep warm.

Split the hoagie rolls lengthwise, cutting about three-quarters of the way through so they remain hinged. Brush the insides of the rolls with melted butter.

Carefully arrange 4-5 saucy meatballs inside each hoagie roll. Top the meatballs with two slices of provolone cheese and a generous sprinkle of shredded mozzarella cheese.

Place the assembled subs on a clean baking sheet. Bake for 5-7 minutes, or until the cheese is melted and bubbly and the rolls are lightly toasted.

Remove from the oven, garnish with fresh chopped parsley, and serve immediately.
