Ingredients

• 1 pound ground beef
• 1/2 white onion (finely chopped)
• 1 clove garlic (finely chopped)
• 2 tablespoons flat leaf parsley (minced)
• 1 eggs
• 1/2 teaspoon kosher salt
• 1/2 teaspoon ground black pepper (freshly)
• 1/2 cup bread crumbs
• 1/2 pound mozzarella cheese (cut into 1-inch cubes)
• 1 tablespoon olive oil