Cook the spinach in a pan until wilted, or thaw frozen spinach and squeeze out the water.
In a bowl, mix ricotta, Parmesan, half the mozzarella, salt, pepper, the egg, and the cooked spinach.
Boil jumbo shells in salted water until al dente. Drain and allow to cool slightly.
Spread marinara sauce in a 9x12-inch dish. Fill each shell with the ricotta mixture and place in the dish.
Cover with foil and bake at 375°F for 35–40 minutes.
Remove the foil, sprinkle the remaining mozzarella on, and broil for 3–4 minutes until bubbly.
Notes
Nutrition info is estimated and may vary based on ingredients and portions. For the most accurate details, consider using a nutrition tool or checking our full Nutrition Information Disclaimer.
Nutrition
Calories: 253kcal
Keyword ricotta spinach stuffed shells, stuffed shells with ricotta and spinach