These Spinach and Ricotta Stuffed Shells are filled with 3 kinds of cheese, spinach, and baked in a homemade vodka sauce. This classic comfort meal is full of punchy flavors and a real crowd-pleaser!
In a large pot, add water and salt to taste, bring to a boil and cook shells to al dente (8 minutes). Reserve 1 cup of pasta water before draining the pasta.
Add chopped spinach, ricotta, 1 cup of the Parmesan, 1 cup of the mozzarella cheese and the egg yolks to a large mixing bowl. Stir to combine completely then season with salt.
Heat vodka sauce in a pan.Add ¾ cup of sauce to the bottom of a baking dish.
Stuff each shell with a heaping spoonful of the filling. Fill the baking dish with the stuffed shells snug. Add 1 cup of reserved pasta water, to help keep the shells moist.
Then add remaining sauce on top.
Top with Parmesan cheese and then mozzarella cheese. Cover and bake for 30 minutes. Uncover and bake for an additional 15 minutes to make sure the cheese gets a nice crust.
Remove from the oven, top with fresh basil, let the shells rest for 5 minutes before serving.