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Plate of spinach and cheese stuffed shells topped with marinara sauce.

Cheesy Spinach Stuffed Shells

A delightful dish filled with creamy, cheesy spinach filling and topped with marinara sauce, perfect for family gatherings.
Prep Time 20 minutes
Cook Time 35 minutes
Total Time 55 minutes
Course Dinner, Main Course
Cuisine Italian
Servings 6 servings
Calories 350 kcal

Ingredients
  

Pasta and Sauce

  • 12 ounces jumbo pasta shells Cooked to perfection
  • 24 ounces marinara sauce Tangy and rich

Vegetables

  • 1 tablespoon olive oil For sautéing
  • 1 small onion, chopped Adds depth of flavor
  • 2 cloves garlic, minced Adds aromatic flavor
  • 10 ounces frozen spinach, thawed and squeezed dry Forms the heart of the filling

Cheese and Binding

  • 15 ounces ricotta cheese Adds richness
  • 1 cup shredded mozzarella cheese Melted into a gooey layer
  • 1/2 cup grated Parmesan cheese For sharp flavor
  • 1 large egg Acts as a binding agent

Seasonings

  • 1 teaspoon salt Enhances flavor
  • 1/2 teaspoon black pepper Adds warmth
  • 1/4 teaspoon red pepper flakes Adds a touch of heat
  • 1 cup shredded mozzarella cheese (for topping) Transforms the dish into a cheesy masterpiece

Instructions
 

Preparation

  • Preheat your oven to 350°F (175°C).
  • Bring a large pot of salted water to boil and cook the jumbo pasta shells according to package instructions until al dente. Drain and set aside.
  • In a large skillet, heat olive oil over medium heat. Add chopped onion and cook until translucent, about 5 minutes.
  • Stir in minced garlic and cook for an additional minute until fragrant.
  • Add thawed spinach to the skillet and sauté for 2-3 minutes, allowing moisture to evaporate.
  • In a large bowl, combine the cooked spinach mixture with ricotta, 1 cup of mozzarella, Parmesan, egg, salt, black pepper, and red pepper flakes. Mix until well combined.

Assembly

  • Spread a layer of marinara sauce at the bottom of a 9x13 inch baking dish.
  • Fill each cooked pasta shell with the spinach and cheese mixture and place them in the baking dish, open side up.
  • Pour the remaining marinara sauce over the stuffed shells, ensuring they are coated.

Baking

  • Cover the dish with aluminum foil and bake for 25 minutes.
  • Remove the foil and sprinkle the remaining 1 cup of mozzarella cheese on top. Bake for an additional 10 minutes until bubbly and golden.
  • Let the shells cool for a few minutes before serving.

Notes

Feel free to add fresh herbs or substitute fresh spinach for frozen. You can prepare these ahead of time and store in the fridge.
Keyword Cheesy, Comfort Food, Pasta, Spinach, Stuffed Shells