Mama's Best Ever Spaghetti and Mozzarella Meatballs

Preheat the oven to 400 degrees F (200 degrees C). Lightly grease a large rimmed baking sheet with olive oil.

Combine ground beef, bread crumbs, mozzarella cheese, egg, and garlic in a medium bowl; mix well. Use a 1/4 cup measure or ice cream scoop to portion into 12 to 13 meatballs. Place on the prepared baking sheet.

Bake in the preheated oven until browned and cooked through, about 15 minutes. An instant-read thermometer inserted into the center of a meatball should read 160 degrees F (70 degrees C).