Spinach and Ricotta Stuffed Shells

Ingredients

• 24uncooked jumbo pasta shells (see note)
• 680 g (24 oz)marinara sauce
• 454 g (16 oz)frozen spinach, thawed
• 425 g (15 oz)ricotta cheese
• 100 g (1 cup)freshly grated Parmesan cheese
• 1egg
• 2.5 ml (½ teaspoon)salt
• to tastepepper
• 2.5 ml (½ teaspoon)Italian seasoning
• 2.5 ml (½ teaspoon)garlic powder
• 200 g (2 cups)shredded mozzarella cheese
• to tastefresh basil and/or chopped parsley, optional, for serving

Instructions

1. 1

   Heat the oven

   Preheat the oven to 190°C (375°F) and position a rack in the top third.

2. 2

   Cook the shells

   Bring a pot of salted water to the boil and cook the shells for 1 minute less than the packet directions specify. Drain them and leave them in the colander until needed.

3. 3

   Prepare the sauce

   Pour the marinara sauce into the bottom of a 23 × 33 cm (9 × 13 inch) casserole dish and spread it into an even layer.

4. 4

   Mix the filling

   While the shells cook, thaw the spinach and squeeze out its water thoroughly. Put it in a bowl with the ricotta, Parmesan, egg, salt, pepper, Italian seasoning and garlic powder, then stir to combine.

5. 5

   Fill the shells

   Use a small spoon to fill each shell with the mixture, placing the filled shells one by one in the casserole dish.

6. 6

   Add the mozzarella

   Scatter the mozzarella over the stuffed shells and cover the casserole dish tightly with foil.

7. 7

   Bake and brown

   Bake for 30 minutes. Remove the foil and grill for a few minutes to brown the cheese, watching carefully so it does not burn.

8. 8

   Serve the shells

   Serve straight away, adding extra salt and pepper as needed and fresh basil and/or parsley if using.

What are stuffed shells?

Stuffed shells are large pasta shapes filled with a savoury mixture and baked in sauce. This American-style casserole draws on Italian ingredients and the familiar baked-pasta combination of tomato sauce, cheese and herbs.

Spinach adds colour and savouriness to the ricotta filling, while Parmesan seasons it and mozzarella melts over the top. A jar of marinara keeps preparation simple and gives the shells a saucy base.

Nutrition and macros by portion

The nutrition label shows one serving as written: 487 calories, 32g protein, 37g carbs, 24g fat.

The pasta shells provide most of the carbohydrates, while ricotta and mozzarella contribute much of the fat and protein; spinach and Parmesan add further nutrients and flavour. Pair a portion with a green salad or vegetables for a more varied plate.

The three-cheese balance

Ricotta: its soft, mild texture makes a creamy filling that is easy to spoon into the shells.

Parmesan: freshly grated cheese brings a more savoury, salty note throughout the filling.

Mozzarella: shredded over the top, it melts into a stretchy layer that browns under the grill.

Get the spinach ready

Squeeze the thawed spinach thoroughly before mixing it with the cheeses. Excess water can make the filling loose and dilute its flavour.

Separate any compacted clumps as you stir so the spinach is distributed through the ricotta rather than gathered in a few bites.

Cook shells just shy of tender

Boiling the pasta for 1 minute less than the packet directions helps the shells hold their shape while you fill them. They finish cooking in the sauce in the oven.

Drain them gently and leave them in the colander until you are ready to fill them. Handle them carefully, as torn shells are harder to stuff.

Fill and arrange with care

A small spoon gives you more control when filling each shell. Fill them generously but avoid forcing the mixture in, which can split the pasta.

Nestle the shells in a single layer over the marinara so the sauce sits beneath them and each portion gets some with the pasta.

Bake, then brown the cheese

The covered bake warms the filling and lets the shells finish cooking without drying out. Keep the foil fitted tightly over the dish for the full 30 minutes.

The final grill is only to colour the mozzarella, so stay nearby and check it frequently. The cheese can go from golden to burnt quickly.

What to serve alongside

A crisp green salad or simply dressed leaves add a fresh contrast to the rich cheese and tomato sauce. Steamed or roasted vegetables also make an easy accompaniment.

Warm bread is useful for scooping up any marinara left in the dish. Finish the shells with basil, parsley or both, if you like.

Recipe notes & tips

• Squeeze the thawed spinach firmly to keep the filling from becoming watery.
• Grate the Parmesan fresh so it blends evenly into the ricotta mixture.
• Cook the shells for 1 minute less than the packet directions to help them stay intact.
• Spread the marinara evenly across the base so the shells bake in sauce.
• Keep a close eye on the cheese during the final grill.
• Add the fresh herbs just before serving for a bright finish.

Variations

• Add fresh herbs: Stir chopped basil or parsley into the filling for extra herbal flavour.
• Use fresh spinach: Cook it until wilted, cool it, then squeeze out as much water as possible before chopping and mixing.
• Make it spicier: Add a pinch of chilli flakes to the ricotta filling.
• Try another sauce: Use a tomato sauce you enjoy in place of the marinara.
• Add vegetables: Mix finely chopped, cooked mushrooms into the filling after removing their excess moisture.

Common mistakes to avoid

• Wet spinach: The filling can turn loose; squeeze the thawed spinach thoroughly before mixing.
• Overcooked shells: Soft pasta may split during filling; cook it 1 minute less than the packet directions.
• Rough handling: Torn shells are difficult to stuff; drain gently and move them with care.
• Uneven sauce: Dry patches can form underneath; spread the marinara over the whole dish base.
• Uncovered baking: The shells may dry out; seal the foil tightly for the first 30 minutes.
• Unwatched grilling: The cheese can burn quickly; stay by the oven and check it often.

How to store

Refrigerate leftovers in a covered container for up to 3 days. Reheat portions in the oven or microwave until hot throughout; add a little extra marinara if the pasta seems dry.

Frequently asked questions