01 -
Set your oven to 375°F (190°C) and let it heat up. Boil water and cook the pasta shells as the package tells you to. Drain them and let them cool so you can safely handle them.
02 -
In a mixing bowl, combine ricotta, mozzarella, Parmesan, the egg, and spinach. Sprinkle with salt and pepper and mix well until it’s seasoned just right.
03 -
Spread half the marinara sauce on the bottom of a baking pan. Stuff each shell with the cheese mixture and arrange them in the pan. Spoon the rest of the sauce over the stuffed shells.
04 -
Cover the dish tightly with foil and bake it for 30 minutes. Remove the foil and bake for an extra 10 minutes until the edges are bubbling and the cheese is fully melted. Sprinkle fresh basil leaves on top before digging in.