Marrow Recipes UK: British Baked Stuffed Marrow

This British-style baked stuffed marrow fills a hollowed marrow with rice, tomato, onion, herbs and mature cheddar, then bakes it until tender and golden. It is a practical way to turn a large summer marrow into a complete vegetarian main, with a savoury filling that balances the vegetable’s mild flavour.

Ingredients

1 medium marrow, about 3½ lb (1.6 kg)
1 cup (185 g) uncooked long-grain rice
1½ cups (355 ml) water, for cooking the rice
1 tablespoon (15 ml) olive oil
1 medium onion, about 1 cup chopped (150 g)
2 garlic cloves, finely chopped (6 g)
About 1½ cups (225 g) marrow flesh, scooped from the vegetable and diced
1 can chopped tomatoes, 14 oz (400 g)
1 tablespoon (15 g) tomato paste
1 teaspoon (1 g) dried oregano
½ teaspoon (3 g) fine salt, divided
¼ teaspoon (0.5 g) ground black pepper
¼ cup chopped fresh parsley (15 g)
1 cup grated mature cheddar (100 g), divided
½ cup breadcrumbs (30 g), optional, for a crisp topping

Instructions

Heat the oven and prepare the marrow. Set the oven to 400°F (200°C). Wash and dry the marrow, trim off its ends, then cut it in half lengthways. Use a spoon to scoop out the seeds and soft, stringy centre, leaving a sturdy shell about ½–¾ inch (1.5–2 cm) thick. Dice the usable flesh and set it aside for the filling. If the marrow is especially large, cut each half across the middle so the pieces fit your baking dish; the cooking method stays the same.
Start roasting the shells. Put the marrow halves cut-side up in a roasting dish or deep baking tray. Brush the cut surfaces and cavities with a little of the measured olive oil and season with a pinch of the salt. Roast for 20 minutes, while you prepare the rice and filling. The shells should begin to soften but still hold their shape; they will finish cooking once stuffed.
Cook the rice while the marrow roasts. Rinse the rice in a sieve under cold water until the water runs mostly clear. Put it in a saucepan with the measured water and the remaining salt. Bring to a boil, cover, and turn the heat to low. Simmer according to the packet directions, usually about 12–15 minutes, until the water is absorbed and the grains are tender. Take the pan off the heat and fluff the rice with a fork. Keep it covered while you make the filling; this short standing time takes place during the marrow’s first roast.
Make the tomato and marrow filling. Warm the remaining olive oil in a large frying pan over medium heat. Add the onion and cook for 5–6 minutes, stirring now and then, until softened but not deeply browned. Stir in the garlic and diced marrow flesh and cook for 2 minutes. Add the chopped tomatoes, tomato paste, oregano and black pepper. Simmer uncovered for about 5 minutes, stirring occasionally, so some of the tomato liquid evaporates. The mixture should be saucy rather than watery; if the marrow flesh has released a lot of liquid, give it another minute or two.
Combine and fill. Take the pan off the heat. Stir in the cooked rice, parsley and about two-thirds of the cheddar. Taste a small spoonful and adjust the seasoning if needed. Carefully spoon the filling into the partly roasted marrow shells, distributing it evenly and mounding it slightly. Avoid pressing it down hard, which can make the filling dense. Scatter over the remaining cheddar and, if using, the breadcrumbs.
Bake until tender. Return the dish to the oven and bake for 25 minutes, until the marrow is easily pierced with a knife and the topping is browned in places. A very thick or mature marrow may need another 5–10 minutes; if the cheese is browning too quickly, loosely cover the top with foil. Let the dish stand for 5 minutes before serving so the filling settles and the halves are easier to portion.
Serve. Cut each stuffed half into portions with a sharp knife and use a broad spatula to lift them from the dish. Spoon any tomato juices from the bottom of the tray over the portions. The marrow should be tender enough to cut with a fork but not so soft that the shell collapses.

Tips

Choose a marrow with firm skin. A medium one is easier to handle and tends to have a less watery, less seedy centre than an oversized specimen. The skin is usually left on to support the filling; trim away any damaged patches, but there is no need to peel sound skin.
Keep the filling from becoming wet. Marrows vary in moisture, and the diced flesh releases water as it cooks. Simmer the tomato mixture until it looks thick and spoonable before adding rice. If the filling is still loose, drain off a little liquid or cook it for a few more minutes rather than adding extra rice uncooked.
Use the right rice texture. Long-grain rice keeps distinct grains in the filling. If using brown rice, cook it fully first and expect a chewier result; it may take substantially longer than white rice, so cook it ahead rather than relying on the short simmer in this method. Leftover cooked rice also works, provided it has been chilled safely and is reheated thoroughly in the oven.
Season in layers, but taste before filling. Cheddar and canned tomatoes can differ in saltiness. The measured salt is a starting point, so taste the rice-and-tomato mixture before it goes into the shells. For a milder flavour, use less garlic or choose a less mature cheddar.

Serving Suggestions

Serve the stuffed marrow hot as a main course, allowing one half per person if the marrow is medium-sized. A crisp green salad with a sharp lemon or vinegar dressing gives a fresh contrast to the soft rice and melted cheese. Steamed green beans, peas or broccoli also work well, especially when the marrow is the centrepiece of a simple supper.

If you want a more substantial plate, add crusty bread to mop up the tomato juices, or serve a small portion of buttery new potatoes alongside. The dish already contains rice, so extra starch is optional rather than necessary. A spoonful of plain yoghurt or a little extra chopped parsley can be offered at the table, but keep garnishes light so they do not cover the tomato and cheddar flavours.

Variations

For a sharper, more savoury filling, replace up to half of the cheddar with crumbled feta. Feta is saltier and does not melt into the rice as smoothly, so taste before adding extra salt. You can also swap the oregano for 1 teaspoon (2 g) dried thyme, or use 2 tablespoons (8 g) chopped fresh basil stirred in after cooking for a sweeter, fresher herb note.

To add more vegetables, cook 1 cup (100 g) diced mushrooms with the onion, or stir in ½ cup (75 g) frozen peas with the cooked rice. Cook mushrooms until their moisture has evaporated before adding the tomatoes. For a little warmth, add ½ teaspoon (1 g) smoked paprika or a pinch of chilli flakes with the oregano. If you do not have breadcrumbs, leave them off; the cheddar still gives the top colour and flavour.

For a smaller marrow or a pair of small ones, use the same filling and divide it between the cavities. Check tenderness after 20 minutes of the final bake, since smaller shells may cook more quickly. If your marrow is very large, you may need extra filling; make another half batch of tomato rice rather than overfilling the cavities or leaving a deep layer of filling uncooked in the centre.

Storage and Reheating

Cool leftovers promptly and refrigerate them within 2 hours of cooking. Store portions in a covered container in the fridge for 3–4 days. The marrow will soften as it sits, but the tomato rice remains flavourful. For easier storage, cut the stuffed halves into portions once they are cool enough to handle rather than trying to fit the whole marrow into a container.

Reheat a portion covered with foil in an oven at 350°F (180°C) until hot throughout; check the centre with a food thermometer and reheat leftovers to 165°F (74°C). A microwave also works for individual portions: cover loosely, heat in short intervals, and turn or rearrange the portion so it warms evenly. Add a spoonful of water or tomato sauce if the rice looks dry. You can freeze portions in a freezer-safe container for up to 2 months for best quality. Thaw overnight in the refrigerator and reheat thoroughly; the thawed marrow will be softer than freshly baked marrow.

Frequently Asked Questions

What is a marrow in the UK?

A marrow is a mature member of the squash family, closely related to a courgette (zucchini). It is generally much larger, with thicker skin and a more developed seed cavity. In this recipe, the seeds are removed and the hollowed vegetable becomes an edible baking shell for the rice filling.

Can I make stuffed marrow ahead of time?

Yes. Cook the rice and tomato filling up to a day ahead, cool them promptly, and keep them covered in the refrigerator. For the best texture, roast and fill the marrow on the day you plan to serve it. If you assemble it fully in advance, refrigerate it and allow extra baking time so the centre heats through; do not leave the assembled dish at room temperature for more than 2 hours.

How do I stop stuffed marrow from going soggy?

Use a firm marrow, remove the seedy centre, and simmer the tomato mixture until it is thick before mixing it with the rice. The initial 20-minute roast softens the shells, but it also lets you spot excess liquid before the filling goes in. If liquid collects in the cavities after that first roast, carefully spoon it out before stuffing.

Do I need to peel marrow before cooking it?

No, not for this recipe. The skin helps the halves hold their shape while baking, and it can be eaten if tender. Very large or mature marrows may have tougher skin; if yours is particularly hard, you can peel a few narrow strips from the outside for easier serving, while leaving enough skin to support each shell.

Can I use a different grain or cheese?

Cooked quinoa, bulgur or couscous can replace the rice, but prepare each grain separately and use roughly 3 cups (about 450–550 g, depending on the grain) cooked. The filling texture will change slightly, so add it gradually and stop when the mixture is full but still spoonable. For cheese, mature cheddar is reliable; a little Parmesan adds a saltier finish, while mozzarella gives a milder, stretchier topping.

Can I freeze the whole stuffed marrow?

It is better to freeze individual portions than a whole marrow, which is bulky and difficult to thaw evenly. Let portions cool, wrap or pack them airtight, and freeze for up to 2 months for best quality. Thaw in the refrigerator and reheat until the centre reaches 165°F (74°C); expect the vegetable shell to be softer after freezing and thawing.

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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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