01 -
Bring a large pot of salted water to a boil. Add the jumbo shells and cook until just al dente according to package instructions. Drain and rinse under cold water, then set aside.
02 -
In a large skillet over medium heat, cook the ground beef with chopped onion until the beef is browned and the onion is softened, about 5-7 minutes. Add the minced garlic and cook for an additional minute. Season with salt and pepper, then remove from heat and let cool slightly.
03 -
In a large mixing bowl, combine the ricotta, 1 cup mozzarella, Parmesan, egg, Italian seasoning, and chopped parsley or basil. Stir in the cooked beef mixture until well combined.
04 -
Preheat your oven to 375°F (190°C). Spread 1 cup of marinara sauce in the bottom of a 9x13-inch baking dish.
05 -
Using a spoon, fill each shell with the beef and ricotta mixture. Place the stuffed shells in the prepared baking dish, open side up. Pour the remaining marinara sauce evenly over the shells.
06 -
Cover the baking dish with foil and bake for 25 minutes. Remove the foil, sprinkle with the remaining mozzarella cheese, and bake for an additional 10-15 minutes, or until the cheese is melted and bubbly.
07 -
Garnish with extra parsley or basil and serve warm.