Cook shells al dente, drain, and rinse with cold water.
Mix ricotta, 1/2 cup mozzarella, Parmesan, egg, spinach, garlic, and spices.
Grease a 9x13-inch dish, spread 1 cup of marinara, stuff shells, and place in the dish.
Pour remaining marinara, top with 1/2 cup mozzarella; bake covered for 25 minutes, uncovered for 10-15 minutes.
Rest for 5 minutes, garnish with basil; serve with bread and wine.