Creating mouthwatering Mozzarella stuffed meatballs can be straightforward if you follow these detailed steps:

1. Preheat Oven: Start by preheating your oven to 400°F (200°C) and line a baking sheet with parchment paper.

2. Mix the Meat: In a large mixing bowl, combine the ground beef (or beef and pork mix), breadcrumbs, egg, minced garlic, grated Parmesan cheese, oregano, salt, and black pepper. Mix well until fully incorporated.

3. Prepare Cheese: Shape a small portion of the meat mixture (about the size of a golf ball), and press a cube of mozzarella cheese into the center. Pinch the meat around the cheese to seal completely.

4. Shape Meatballs: Roll the meat into a tight ball and place it on the prepared baking sheet. Repeat this process until all meatballs are formed.

5. Bake: Place the baking sheet in the preheated oven and bake for 25-30 minutes, or until the meatballs are golden brown and cooked through.

6. Heat Marinara: While the meatballs are baking, heat the marinara sauce in a saucepan over medium heat.

7. Add Cheese Top: If desired, sprinkle additional shredded mozzarella cheese on top of the meatballs during the last 5 minutes of baking for a cheesy topping.

8. Cool: Once cooked, remove the meatballs from the oven. Let them cool for 5-10 minutes to prevent cheese burns.

9. Serve: Serve the meatballs drizzled with marinara sauce and garnished with fresh basil or parsley if desired.

These steps make it easy to achieve a delicious dish that is sure to elevate any meal!