In a large mixing bowl, combine the ground beef, salt, black pepper, garlic powder, onion powder, oregano, basil, egg, and breadcrumbs until fully combined.

Preheat your oven to 400°F (200°C). Shape the meat mixture into 1-inch meatballs and brown them in a skillet over medium heat.

Transfer browned meatballs to a baking dish, coat with marinara sauce, and sprinkle with mozzarella cheese.

Roll out the puff pastry, cut out a circle, and cover the meatball mixture with it. Seal the edges.

Bake for 25-30 minutes or until the pastry is golden brown and flaky.

Allow to cool for a few minutes, then invert onto a serving platter to unveil the meatballs and cheese.