Creating the Best Easy Ricotta Stuffed Shells is straightforward when you follow these clear steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Cook Pasta: In a large pot of boiling salted water, cook the jumbo pasta shells according to package instructions until al dente. Drain and set aside.
3. Prepare Filling: In a large bowl, combine the ricotta cheese, half of the mozzarella, Parmesan cheese, egg, basil, garlic powder, onion powder, salt, and pepper. Mix until smooth.
4. Stuff Shells: Take each cooked pasta shell and spoon the ricotta mixture into it. Ensure that each shell is generously filled.
5. Arrange in Baking Dish: Spread a thin layer of marinara sauce on the bottom of a baking dish. Place the stuffed shells, open side up, on top of the sauce.
6. Add Sauce and Cheese: Pour the remaining marinara sauce over the stuffed shells, covering them completely. Sprinkle the remaining mozzarella cheese on top.
7. Bake: Cover the baking dish with aluminum foil and bake for 20 minutes. Then, remove the foil and bake for an additional 10 minutes until the cheese is bubbly and golden.
8. Cool and Serve: Allow the stuffed shells to cool for a few minutes before serving. Garnish with additional basil if desired.

This step-by-step guide will ensure you have the Best Easy Ricotta Stuffed Shells ready in no time!