Instructions:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Cook Pasta Shells: Cook the jumbo pasta shells according to the package instructions. Drain and set aside to cool.
3. Prepare Filling: In a large bowl, combine ricotta cheese, shredded mozzarella, grated Parmesan, egg, chopped parsley, dried oregano, dried basil, garlic powder, salt, and pepper. Mix well until all ingredients are evenly incorporated.
4. Stuff Shells: Spoon the ricotta mixture into each cooked pasta shell, ensuring they are generously filled.
5. Assemble in Baking Dish: Spread a thin layer of marinara sauce on the bottom of a baking dish. Arrange the stuffed shells in a single layer on top of the sauce.
6. Top with Sauce and Cheese: Pour the remaining marinara sauce over the stuffed shells, covering them evenly. Sprinkle additional shredded mozzarella and Parmesan cheese on top for a cheesy finish.
7. Bake: Cover the baking dish with foil and bake in the preheated oven for about 25-30 minutes, or until the cheese is melted and bubbly.
8. Broil (Optional): If you desire a golden-brown crust on the cheese, uncover the dish and broil for an additional 2-3 minutes, keeping a close eye to prevent burning.
9. Serve: Carefully remove from the oven and let it cool for a few minutes before serving. Garnish with fresh parsley if desired.
10. Enjoy: Delight in the cheesy goodness of Ricotta Stuffed Shells, a perfect dish to share with loved ones.

This recipe offers a comforting and flavorful take on classic stuffed shells, making it an excellent choice for a satisfying family dinner or when entertaining guests.