Preheat the oven to the recommended temperature and lightly grease a baking dish to prevent sticking and ensure easy cleanup after baking.

In a large mixing bowl, add the ground meat, egg, seasonings, salt, and pepper, then mix gently with your hands or a spoon just until everything is evenly combined, being careful not to overmix so the meatballs stay tender.

Scoop and shape the mixture into evenly sized meatballs, rolling them lightly between your palms, and arrange them in a single layer in the prepared baking dish with a little space between each one.

Place the dish in the oven and bake until the meatballs are fully cooked through and lightly browned on the outside, which helps seal in moisture and flavor.

Remove the dish from the oven and spoon the marinara sauce evenly over the meatballs, making sure each one is coated so every bite stays juicy and flavorful.

Sprinkle the cheese generously over the top, covering the meatballs evenly, then return the dish to the oven and bake until the cheese is fully melted, bubbly, and lightly golden.

Let the bake rest for a few minutes before serving so the sauce thickens slightly and the flavors settle, making it easier to serve and enjoy.