Preheat your oven to 375°F (190°C).

Bring a large pot of salted water to a boil and cook the pasta shells for about 8-10 minutes, or until al dente. Drain and set aside.

In a large skillet over medium heat, add the ground beef. Season with garlic powder, onion powder, salt, and pepper. Cook until the beef is browned and cooked through. Drain any excess fat.

In a bowl, combine the cooked beef, ricotta cheese, and half of the mozzarella cheese. Stir until well mixed.

Carefully fill each cooked shell with the beef and cheese mixture, placing them seam side up in a greased baking dish.

Pour marinara sauce over the stuffed shells, ensuring every shell is coated. Sprinkle the remaining mozzarella on top.

Cover the dish with aluminum foil and bake for 25 minutes. Then remove the foil and bake for an additional 10 minutes, or until the cheese is bubbly and golden.

Once baked, let it cool for a few minutes before garnishing with fresh herbs. Serve and enjoy!