For the Homemade Meatballs

• Soak the slice of whole wheat bread in a small bowl of milk for about 2 minutes. Squeeze out the excess liquid and set it aside.
• In a large mixing bowl, combine the ground beef, soaked bread, egg, minced onion, Parmesan cheese, garlic, basil, parsley, salt, and pepper. Mix gently with clean hands or a spoon until just combined.
• Roll the mixture into 1-inch meatballs, aiming for uniform size. You should get about 12-15 meatballs.

To cook the meatballs:

• Pan-Frying Method: Heat a drizzle of olive oil in a skillet over medium heat. Cook the meatballs, turning occasionally, until browned on all sides, about 6-8 minutes.
• Baking Method: Preheat your oven to 400°F (200°C). Place the meatballs on a greased baking sheet and bake for 15-20 minutes, or until fully cooked.
• Set the cooked meatballs aside while you prepare the subs.

For Assembling the Meatball Subs

Prepare the Hoagie Rolls

• Cut the hoagie rolls lengthwise without cutting all the way through. Toast them lightly in the oven or on a grill pan to add texture.

Heat the Marinara Sauce

• Warm the marinara sauce in a small saucepan over low heat, stirring occasionally.

Layer the Ingredients

• Place 3-4 meatballs into each toasted hoagie roll.
• Spoon marinara sauce generously over the meatballs.
• Sprinkle freshly grated Parmesan cheese on top of the sauce.
• Add a thick layer of shredded mozzarella cheese.
• Sprinkle dried oregano over the cheese for added flavor.

Melt the Cheese

• Place the assembled subs on a baking sheet and broil them in the oven for 2-3 minutes, or until the cheese is melted and bubbly. Watch carefully to avoid burning.

Serve and Enjoy

• Remove the meatball subs from the oven, let them cool slightly, and serve warm. These subs are best enjoyed fresh and hot!