Creating Stuffed Pasta Shells with Spinach & Ricotta can be a fun and rewarding experience. Follow these steps to ensure your dish turns out perfectly:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Cook Pasta: Boil a large pot of salted water. Cook the jumbo pasta shells according to package instructions until al dente. Drain and set aside.
3. Prepare Filling: In a large mixing bowl, combine ricotta cheese, chopped spinach, ¾ cup mozzarella cheese, Parmesan cheese, egg, garlic powder, salt, and pepper. Mix well until fully combined.
4. Stuff Shells: Take a cooked pasta shell and fill it generously with the ricotta and spinach mixture. Repeat until all shells are filled.
5. Spread Sauce: In a 9×13 inch baking dish, spread 1 cup of marinara sauce evenly on the bottom.
6. Arrange Shells: Place the stuffed shells in the baking dish, open side up. Once all shells are arranged, pour the remaining marinara sauce over the top.
7. Add Cheese: Sprinkle the remaining mozzarella cheese on top of the sauce.
8. Bake: Cover the dish with aluminum foil and bake for 25 minutes. Then, remove the foil and bake for an additional 10–15 minutes until the cheese is bubbly and lightly golden.
9. Garnish: Once baked, remove from the oven and let it cool for a few minutes. Garnish with fresh basil, if desired.
10. Serve: Use a spatula to serve the stuffed shells on plates alongside additional marinara sauce, if desired.

These steps will guide you in creating this incredible dish effortlessly.