Homemade Meatball Sub Recipe

When it comes to sub sandwiches, there are plenty of fillings that go great between the buns. In many cases, people make subs with deli meat, and they're undoubtedly delicious. But if you want to take your sub sandwich game to a new level and combine the hoagie roll with hearty meatballs, then this recipe is a must-try. The mozzarella on top of the sub is the icing (or, in this case, cheese) on the cake.

Recipe developer Michelle McGlinn came up with this amazing meatball sub that is sure to be a hit. "I really love making homemade meatballs and sauce. There's something so special about carefully preparing each meatball from scratch and covering [them] in a rich, flavorful sauce," McGlinn raves. She also loves how this recipe, inspired by "rustic, traditional meatball and marinara," is so quick and simple.

Keep reading to find out how to make this delicious meal.

There are quite a few items you will need for these homemade meatball subs. Grab some ground pork, ground beef, an egg, breadcrumbs, freshly grated Parmesan, a large onion, garlic cloves, tomato paste, tomato purée, sugar, mozzarella slices, and of course, hoagie rolls. As for additional seasonings, we'll be working with salt, black pepper, thyme, oregano, and dried basil. If you like, you can also use fresh basil as an additional garnish. "You could also swap the ½ pound pork and ½ pound beef for meatloaf mix," McGlinn notes, as it could potentially "be cheaper and easier than buying separate meats."

Once you have all the ingredients, you're ready to make this delicious meatball sub.

Set your oven to 400 F, letting it preheat while you do the rest of the prep work.

In a large bowl, get started on the meatball mixture. Toss in the ground beef, ground pork, ½ tablespoon salt, ½ tablespoon pepper, thyme, oregano, egg, breadcrumbs, and ¼ cup grated Parmesan. If you'd prefer, you can replace the beef and pork with ground chicken. "With chicken, you will have to cook the meatball all the way through — no pink or undercooked parts — so keep that in mind if swapping the meats," McGlinn says.

Use your hands to combine the meatball ingredients until well incorporated. Just be careful not to overwork the meat.

Once you finish mixing the meat, prepare your baking sheet by covering it with foil; this will help catch the grease and make cleanup easier. Add a wire rack on top of the sheet and spray with cooking spray to avoid having the meat stick to it.

Using your hands, roll the meatballs into 1-inch balls. The mixture should yield 16 balls, so keep that in mind as you divvy up the meat. You will need four meatballs for each sandwich. 

Once your oven has preheated, pop in the baking sheet with the meatballs and bake them for 15 minutes. (Keep the oven on after they're done, though, as you'll need to use it again.)

It's time to multitask. While the meatballs bake, you can put together the sauce. Grab a medium-sized skillet and place it over medium heat. Add a spray or drizzle of oil, then toss in the onions and cook until translucent.

Once the onions soften, add the garlic and cook until fragrant; this should only take about 1 minute. Then, add the tomato paste. Use the back of a spoon to combine the paste with the garlic and onions and continue to cook for 2 to 3 minutes, until the paste starts sticking to the skillet.

Pour the tomato purée into the sauce mixture and stir to combine. Add oregano, salt, pepper, sugar, and dried basil. Stir to combine and bring the sauce to a simmer.

Once the sauce begins to simmer, stir in the remaining Parmesan cheese; if you have the rind from the Parmesan saved, you can also use that to add even more flavor the sauce. Then add the meatballs to the pan, rolling them so they're coated in the red sauce. Continue cooking for about 5 minutes. The meatballs may still be slightly pink in the center, but that's totally fine.

Remove the wire rack and foil from the baking sheet. Fill each hoagie roll with four meatballs and cover them in sauce. Place the mozzarella slices over the meatballs, close the sandwiches, then pop them into the oven until the cheese melts. This should only take a few minutes.

Once you remove the meatballs, you can then garnish the subs with fresh basil.

It's time to dig in! These sandwiches are plenty filling on their own, but McGlinn also provides a few of her favorite serving suggestions. "Usually with subs, I think of chips or fries, but if you're serving this for dinner, I'd actually recommend serving this with a salad," McGlinn notes. "A big house salad (like the salads at Olive Garden) or a simple Caesar salad would be perfect with this tomato-and-meat-heavy main."

McGlinn recommends keeping the sides lighter since the sandwich is pretty filling. You may even have some for the next day: "If using the leftovers for lunch, a side of potato chips is plenty easy and delicious!"