Creating Spinach Garlic Meatballs Stuffed with Mozzarella is easy when you follow these simple steps:

1. Preheat Oven: Preheat your oven to 400°F (200°C).
2. Sauté Spinach: In a skillet, heat olive oil over medium heat. Add chopped spinach and minced garlic. Sauté until the spinach is wilted and garlic is fragrant, about 2-3 minutes. Remove from heat and let cool slightly.
3. Mix Ingredients: In a large mixing bowl, combine ground beef, sautéed spinach and garlic, breadcrumbs, grated Parmesan, salt, black pepper, Italian seasoning, and the egg. Mix well until fully combined.
4. Prepare Cheese: Cut mozzarella cheese into cubes—about ½ inch in size.
5. Form Meatballs: Take a portion of the meat mixture (about 2 tablespoons) and flatten it in your palm. Place a cube of mozzarella in the center and fold the meat around it, forming a ball. Ensure the cheese is fully encased.
6. Transfer to Baking Sheet: Place meatballs on a greased baking sheet, ensuring they are spaced apart.
7. Bake: Bake in the preheated oven for 25-30 minutes, or until meatballs are brown and cooked through. An internal temperature of 160°F (70°C) confirms they’re done.
8. Serve: Serve immediately with marinara sauce if desired, or allow to cool and store for later use.

By following these straightforward steps, you’ll produce delicious meatballs that are sure to please!