Creating Meatball Heroes from Leftover Stuffing Recipe is straightforward if you follow these easy steps:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Mix the Meatball Ingredients: In a large bowl, combine the ground beef (or turkey) and leftover stuffing. Mix until well combined.
3. Form the Meatballs: Shape the mixture into meatballs, about 1 inch in diameter. Place them on a baking sheet lined with parchment paper.
4. Bake the Meatballs: Bake the meatballs in the preheated oven for 15-20 minutes or until they are cooked through and browned.
5. Prepare the Sauce: While the meatballs are baking, heat the marinara sauce in a small saucepan over medium heat.
6. Assemble the Heroes: Once the meatballs are done, remove them from the oven. Place 3-4 meatballs into each hero roll, and top with marinara sauce and a generous sprinkle of shredded mozzarella cheese.
7. Melt the Cheese: Return the assembled sandwiches to the oven for an additional 5 minutes, or until the cheese is melted and bubbly.
8. Serve: Remove from the oven and let cool for a minute before serving.

These simple steps will guide you in creating these delicious Meatball Heroes effortlessly.