Preheat the oven to 375°F (190°C).

In a large skillet, brown the ground beef over medium heat, seasoning with salt, pepper, and garlic powder.

Once the beef is browned, drain excess fat and stir in the marinara sauce and Italian seasoning, letting it simmer for a few minutes.

Add the cheese tortellini to the skillet, stirring gently to coat them in the sauce.

Transfer the mixture to a baking dish, spreading it evenly, and then top with shredded mozzarella cheese.

Cover the dish with aluminum foil and bake for 20 minutes.

Remove the foil and bake for an additional 10-15 minutes, or until the cheese is bubbly and golden brown.

Let the dish cool for a few minutes, then garnish with fresh parsley before serving.