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Spinach & Cheese Stuffed Shells - Comforting, Creamy, and Easy

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Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings: 6 servings
Ingredients Method

Ingredients
  

  • Jumbo pasta shells – 20–24 shells (about 8 oz), plus a few extra in case some tear
  • Ricotta cheese – 15 oz (whole milk preferred for creaminess)
  • Shredded mozzarella – 2 cups, divided
  • Grated Parmesan or Pecorino Romano – 1/2 cup, plus extra for topping
  • Spinach – 10 oz frozen (thawed and well-drained) or 6–8 cups fresh (sautéed and squeezed dry)
  • Egg – 1 large (helps bind the filling)
  • Marinara sauce – 3–4 cups (store-bought or homemade)
  • Garlic – 2 cloves, minced
  • Olive oil – 1 tablespoon (for sautéing if using fresh spinach)
  • Italian seasoning – 1 teaspoon (or a mix of dried basil and oregano)
  • Nutmeg – A pinch (optional, enhances the ricotta)
  • Red pepper flakes – 1/4 teaspoon (optional, for mild heat)
  • Salt and black pepper – To taste
  • Fresh basil or parsley – Chopped, for garnish

Method
 

  1. Preheat the oven: Set to 375°F (190°C). Lightly grease a 9x13-inch baking dish.
  2. Cook the shells: Boil in salted water until just shy of al dente. They should be tender but still firm. Drain and rinse under cool water to stop cooking, then spread on a sheet pan to keep them from sticking.
  3. Prep the spinach: If using frozen, thaw completely and squeeze out as much water as possible. If using fresh, sauté with olive oil over medium heat until wilted, then cool and squeeze dry. Chop finely.
  4. Make the filling: In a large bowl, mix ricotta, 1 1/2 cups mozzarella, Parmesan, egg, spinach, garlic, Italian seasoning, nutmeg (if using), red pepper flakes (if using), and a good pinch of salt and pepper. Taste and adjust seasoning.
  5. Layer the sauce: Spread 1–1 1/2 cups marinara evenly across the bottom of the baking dish. This keeps the shells from sticking and adds moisture.
  6. Stuff the shells: Spoon 1–2 tablespoons of filling into each shell. Nestle them open-side up into the sauced baking dish. It’s okay if they’re snug.
  7. Sauce and cheese: Spoon the remaining marinara over the shells, covering most of the pasta. Sprinkle the remaining 1/2 cup mozzarella and a little extra Parmesan on top.
  8. Bake: Cover with foil and bake for 20 minutes. Remove foil and bake another 10–15 minutes until bubbling and lightly browned in spots.
  9. Rest and garnish: Let the dish sit for 5–10 minutes to set. Top with chopped basil or parsley. Serve warm.