Marrow Recipes: British Lentil-Stuffed Marrow

This British-style stuffed marrow is a large, mild squash filled with lentils, tomatoes, herbs and cheddar, then baked until tender. The savoury filling balances marrow’s gentle flavour, and a short pre-roast helps the squash cook evenly without turning the topping soggy.

Ingredients

1 small or medium marrow, about 2¾ lb (1.25 kg)
2 tbsp olive oil (30 ml), divided
1 medium yellow onion, finely chopped, about 1 cup (150 g)
2 garlic cloves, finely chopped or crushed, about 2 tsp (6 g)
1 tbsp tomato paste (15 g)
1 can chopped tomatoes, 14.5 oz (410 g)
1 can brown or green lentils, 15 oz (425 g), drained and rinsed; about 1½ cups (250 g) drained
1 tsp dried thyme (1 g)
½ tsp smoked paprika (1 g)
½ tsp fine salt (3 g), plus more to taste
¼ tsp ground black pepper (0.5 g), plus more to taste
½ cup plain breadcrumbs (30 g)
¾ cup grated mature cheddar (85 g)
2 tbsp chopped fresh parsley (8 g)

Instructions

Heat the oven to 400°F (205°C). While it heats, wash and dry the marrow, trim off the stem end, and slice it in half lengthwise. Use a spoon to scrape out the seeds and the soft, stringy centre, leaving a sturdy flesh border about ½ inch (1 cm) thick. Set the halves cut-side up on a board. Chop the onion, garlic and parsley, and prepare the other filling ingredients; the 25-minute prep time includes this work and preheating the oven.
Brush the cut surfaces and hollowed centres with 1 tablespoon of the oil (15 ml), then season lightly with salt and pepper. Put the halves cut-side down on a rimmed baking sheet. Roast for 15 minutes. This first bake starts softening the flesh and lets some moisture run onto the tray. Carefully turn the halves cut-side up; if liquid has collected in the hollows, pour it away. Keep the oven on.
Make the filling while the marrow is out of the oven. Heat the remaining 1 tablespoon oil (15 ml) in a frying pan over medium heat. Add the onion and cook for 5–6 minutes, stirring occasionally, until soft and translucent but not deeply browned. Stir in the garlic and tomato paste and cook for 30 seconds, just until fragrant.
Add the chopped tomatoes, drained lentils, thyme, smoked paprika, salt and pepper. Bring the mixture to a gentle simmer, then cook uncovered for about 8 minutes, stirring now and then. It should become thick enough to mound on a spoon rather than run like soup. Taste and adjust the seasoning. Remove the pan from the heat and stir in the breadcrumbs, half of the cheddar and half of the parsley. The breadcrumbs absorb some tomato liquid and help the filling hold together.
Spoon the filling evenly into the marrow halves, pressing it gently into the hollows without packing it hard. Scatter the remaining cheddar over the top. Return the tray to the oven and bake for 30 minutes, until the cheese is melted and browned in spots and a small knife passes easily through the marrow flesh. If the marrow is still firm, continue baking in 5-minute increments and check again. Let it stand for 5 minutes so the filling settles, then finish with the remaining parsley.
Cut each half crosswise into portions with a sharp knife, or serve a half per person if the marrow is small. Use a wide spatula to lift the portions from the tray, since very tender marrow can split. Spoon any filling that falls away back onto the serving plate.

Tips

Choose a manageable marrow. A small or medium one around 2¾ lb (1.25 kg) is easier to halve and fits on a standard baking sheet. If yours is much larger, cut it into shorter sections before hollowing, or allow extra final baking time and check tenderness in several places.
Keep the filling thick. Canned tomatoes vary in how much liquid they contain. If the mixture still looks loose after simmering, give it a few more minutes uncovered before adding the breadcrumbs. A watery filling can make the centre steamy and the topping soft.
Season the squash as well as the filling. Marrow has a mild taste, so a little salt and pepper on its cut surface makes a difference. Go gently at first because the cheddar adds saltiness too; you can always add more at the table.
Use what you have for the topping. Panko or whole-wheat breadcrumbs both work. If you have no breadcrumbs, use ¼ cup (25 g) rolled oats, pulsed briefly or left whole; the topping will be heartier and less crisp. Add them only after the tomato mixture has reduced.

Serving Suggestions

Serve the stuffed marrow hot, with a green salad dressed with lemon or vinegar to cut through the rich cheese and tomato. For a more substantial plate, add boiled new potatoes, buttered rice, couscous or crusty bread. The lentils make the filling satisfying on its own, while a simple side lets the mild squash remain the focus.

If you are serving a whole half per person, set it on a warm plate and provide a knife and fork; the skin is edible when tender, though some people prefer to scoop the flesh and filling away from it. For a family-style meal, cut the halves into thick slices at the table and pass extra parsley, black pepper and grated cheddar separately. A spoonful of plain yogurt or sour cream is also pleasant alongside, but is not needed for the recipe to work.

Variations

For a different texture, replace the canned lentils with about 1½ cups (250 g) drained canned chickpeas, lightly crushed with a fork. Chickpeas taste nuttier and make the centre less cohesive, so stir in an extra tablespoon of breadcrumbs if the filling seems loose. Cooked brown or green lentils prepared from dry can also be used; measure them after cooking and draining, rather than substituting the same weight of dry lentils.

Change the herbs to suit the rest of your meal. Dried oregano or Italian seasoning can stand in for thyme, while chopped basil is best stirred in after the pan comes off the heat. For a little warmth, add a pinch of chilli flakes with the paprika. If you do not have smoked paprika, use sweet paprika; the result will lose its smoky note but will still be balanced and savoury.

To make the recipe dairy-free, leave out the cheddar and use an extra 2 tablespoons (8 g) of breadcrumbs mixed with 1 tablespoon (15 ml) olive oil for the top. The crust will be less creamy and cheesy, but still toast nicely. You can also swap mature cheddar for grated Gruyère or a firm vegetarian cheese; a milder cheese gives a gentler finish, so taste the filling before baking and adjust the pepper.

If your marrow is exceptionally large, the seed cavity may be broad and the flesh thick. Rather than piling in extra filling, scoop out a little more of the centre and save the removed flesh for soup or a vegetable sauce. The filling quantity here is designed for one small-to-medium marrow; any extra can be baked in a small ovenproof dish beside it for about 15–20 minutes, until hot and lightly browned.

Storage and Reheating

Cool leftovers and refrigerate them within 2 hours, in a covered container. They keep for 3–4 days in the refrigerator. For easier reheating, store portions rather than a whole stuffed half, and keep any loose filling with the marrow so it does not dry out. Do not leave cooked marrow at room temperature for longer than 2 hours.

Reheat individual portions in a covered ovenproof dish at 350°F (175°C) until steaming hot throughout; add a spoonful of water if the filling looks dry. A microwave also works: cover loosely and heat in short intervals, turning or rearranging the portion so it warms evenly. Leftovers should reach 165°F (74°C) when checked with a food thermometer. The marrow softens further on reheating, so handle it gently. Freezing is possible for up to 2 months in a freezer-safe container, though the squash may become softer and release more water after thawing. Thaw overnight in the refrigerator and reheat until piping hot.

Frequently Asked Questions

What is marrow, and can I use zucchini instead?

Marrow is a mature squash in the same family as courgette, known as zucchini in the United States. It is larger, usually has thicker skin and a more developed seed cavity, and its flesh is mild and moist. You can use large zucchini if marrow is unavailable: halve them lengthwise, scoop out the centre and start checking them earlier, since smaller squash often cook faster.

Do I need to peel the marrow?

No. The skin helps the halves keep their shape during baking and is edible once tender. Wash it well and trim away any damaged areas. If the skin on an especially large, mature marrow is very tough, you can peel a few narrow strips before baking, but peeling the whole squash may make the halves harder to lift and serve.

Why roast the marrow before adding the filling?

The brief first bake gives the squash a head start and releases some excess moisture before the filling goes in. Without it, the lentil mixture may finish cooking while the marrow is still firm. Pour away liquid that gathers in the hollow after this stage, but do not scrape away the flesh unless the seed cavity is particularly large.

Can I make stuffed marrow ahead?

For the best texture, prepare the filling and hollow the marrow ahead, then keep them in separate covered containers in the refrigerator for up to a day. Roast and stuff the marrow shortly before serving. You can also assemble the dish several hours ahead and refrigerate it, but allow extra baking time because it will be cold when it enters the oven; check the centre and flesh for doneness rather than relying only on the clock.

How can I tell when the marrow is cooked?

Push a small, sharp knife through the thickest part of the flesh beside the filling. It should slide in easily, while the halves remain firm enough to lift. If the knife meets resistance, bake for another 5 minutes and check again. The exact time varies with the marrow’s size, age and thickness, so tenderness is a more useful guide than colour alone.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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