Preheat oven to 350°.
In a bowl mix spinach, ricotta, parmesan, 1 cup of mozzarella, egg & spices.
Spread some pasta sauce to the bottom of baking dish.
Fill shells with cheese mixture using a spoon or pipe using a resealable bag with a corner tip cut off.
Align stuffed shells in a row tightly to prevent them from opening.
Top with remaining sauce.
Cover with foil and bake for 25 min.
Spread remaining mozzarella cheese, bake for 5 min or until cheese is melted and bubbly.
Enjoy!