Creating Easy Stuffed Shells is easy if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Cook Pasta Shells: In a large pot of boiling salted water, cook the pasta shells according to package instructions until al dente. Drain and set aside to cool.
3. Prepare Filling: In a mixing bowl, combine ricotta cheese, 1 cup of mozzarella cheese, ½ cup of Parmesan cheese, egg, dried basil, garlic powder, salt, and pepper. Mix until well combined.
4. Fill the Shells: Using a spoon or piping bag, fill each pasta shell generously with the cheese mixture.
5. Assemble the Dish: Spread a thin layer of marinara sauce on the bottom of a baking dish. Arrange stuffed shells in the dish, seam side up.
6. Top with Sauce: Pour the remaining marinara sauce over the filled shells. Sprinkle the extra mozzarella and Parmesan cheese on top.
7. Bake: Cover the dish with foil and bake for 20 minutes. Remove the foil and bake for an additional 10-15 minutes until cheese is bubbly and slightly golden.
8. Cool and Serve: Once out of the oven, let the dish cool for about 10-15 minutes. Garnish with parsley if desired.

By following these straightforward steps, you’ll have a beautiful dish of Easy Stuffed Shells ready to enjoy.