Prepare the Meatball Mixture:
In a large bowl, combine the ground beef, chopped spinach, minced garlic, breadcrumbs, Parmesan cheese, egg, salt, black pepper, and Italian seasoning. Mix gently until just combined to keep the meatballs tender.
Stuff with Mozzarella:
Take 1-2 tablespoons of the meat mixture and flatten it in your palm. Place a cube of mozzarella cheese in the center, then wrap the meat around it, sealing it completely. Roll into a ball. Repeat with the remaining mixture and cheese cubes.
Cook the Meatballs:
In a large skillet, heat the olive oil over medium heat. Add the meatballs in batches, being careful not to overcrowd the pan. Cook for about 4-5 minutes per side, until browned and cooked through.
Serve:
Serve the meatballs warm with marinara sauce for dipping or over pasta. Garnish with extra Parmesan and fresh basil, if desired. Enjoy!
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