Spinach and Ricotta Stuffed Pasta Shells

These stuffed pasta shells work best when the spinach is well drained and the tomato sauce is loose enough to keep the pasta moist. The filling is simple: ricotta, spinach, a little Parmesan and lemon zest. There is no raw egg in the mixture, which makes it easier to taste and adjust before filling the shells.

Serves: 4 | Estimated preparation: 30 minutes | Estimated cooking: 50 minutes | Estimated total: 80 minutes.

Recipe development note: this recipe has not been kitchen-tested by Tasty Food. Times are estimates; follow the texture and safe-temperature checks in the method. The featured image is an AI-generated serving illustration and may differ from your result.

Equipment

A saucepan, a colander, a clean towel or sieve, a mixing bowl and a roughly 20 × 30 cm baking dish.

Ingredients

• 24 large dried pasta shells, about 250 g, plus a few spares
• 300 g frozen chopped spinach, thawed
• 350 g ricotta
• 40 g finely grated vegetarian Parmesan-style hard cheese
• 1 small lemon, finely grated zest only
• 1/4 teaspoon ground nutmeg
• 1/2 teaspoon fine salt, divided, plus salt for pasta water
• 1/4 teaspoon black pepper
• 1 tablespoon olive oil
• 2 garlic cloves, finely chopped
• 700 ml tomato passata
• 100 ml water
• 1 teaspoon dried oregano
• 100 g grated mozzarella

Instructions

1. Prepare the dish and spinach. Heat the oven to 190°C/170°C fan/375°F. Squeeze the thawed spinach in a clean towel or press firmly in a sieve until very little liquid comes out. Break up the compacted spinach with your fingers. Grease the baking dish lightly if its surface tends to catch.
2. Cook the shells slightly short. Cook the shells in boiling water for about 2 minutes less than the packet timing. Stir gently at the beginning so they do not stick. Drain, rinse briefly under cool water to make them manageable and separate on a tray. Keep any torn shells for tasting or tuck them beneath intact shells later.
3. Simmer the sauce. Warm the oil in a saucepan over medium-low heat. Stir in garlic for 30 seconds, then add passata, water, oregano and half the measured salt. Simmer gently for 8 minutes. It should remain pourable; the shells will absorb moisture in the oven. Spoon about two thirds into the baking dish.
4. Mix and fill. Combine ricotta, drained spinach, hard cheese, lemon zest, nutmeg, pepper and the remaining salt. Taste and adjust before filling. Spoon the mixture evenly into 24 shells, about a heaped tablespoon each. Set them filling-side up in the dish, nestling them closely without crushing.
5. Bake covered, then colour. Spoon the remaining sauce around and lightly over the shells. Scatter with mozzarella. Cover with foil, keeping it clear of the cheese, and bake for 20 minutes. Uncover and bake for another 15–20 minutes until the sauce bubbles, the shells are tender and the centre is thoroughly hot, reaching 74°C/165°F. Rest for 5 minutes before serving.

Cooking notes and substitutions

Avoiding a watery filling

Spinach releases more water than it appears to contain. Squeezing it before mixing is the key step. If the ricotta is visibly wet, drain it in a sieve in the refrigerator first; do not compensate by adding large amounts of hard cheese.

Cheese and pasta alternatives

Choose a hard cheese explicitly labelled suitable for vegetarians if needed. Cannelloni tubes can use the same filling, but follow the pasta packet instructions and allow extra sauce and baking time where required. Smaller shells cannot be filled in the same way.

Preparing ahead

Assemble, cover and refrigerate for up to 24 hours. Bake in an oven-safe dish, allowing extra covered time for the cold centre to reach 74°C/165°F. Refrigerate cooked leftovers promptly within 2 hours, use within 3–4 days and reheat thoroughly. The pasta softens further after freezing.

Allergens and food safety

Contains wheat and milk. Check pasta for egg and cheeses for vegetarian suitability where relevant. Keep refrigerated food at 4°C/40°F or below. Use clean utensils when checking cooked food.

Food safety reference: FoodSafety.gov cooking temperature chart. For chilling and reheating guidance, see USDA leftovers guidance.

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