Gigot d’Agneau (Roast Leg of Lamb with White Beans)
Why this recipe works
- Classic flavouring: Garlic and rosemary are tucked into the lamb so their aroma seasons the meat as it roasts.
- Built-in sauce base: Wine, stock and browned roasting juices give the beans a deep savoury flavour without needing a separate sauce.
- Hearty serving style: Creamy white beans and carved lamb make the dish feel generous, rustic and well suited to a shared dinner.
Get the most out of this recipe
Timing notes
- Soak the beans ahead: Dried white beans need a long soak before cooking, so start them the night before or early in the day.
- Rest before carving: Resting the lamb after roasting helps the juices settle, making the slices neater and less likely to dry out.
- Carve at the end: Keep the lamb loosely covered while the beans finish, then carve just before serving so the meat stays moist.
Texture tips
- Use temperature as a guide: For medium lamb, aim for about 60°C (140°F) before resting; for well done, cook to about 70°C (160°F).
- Simmer the beans gently: A gentle simmer keeps the skins intact while the cooking liquid becomes glossy and naturally creamy.
- Avoid a hard boil: Boiling the beans too vigorously can break them up before they have absorbed the flavour from the pan juices.
Ingredient swaps
- Without wine: Replace the white wine with chicken stock and simmer it briefly to concentrate the flavour before adding the beans.
- Using dried rosemary: Dried rosemary can replace fresh, but use it sparingly and add it to the oil rub so it has time to soften and bloom.
Equipment you'll need
Ingredients
Instructions
- Put the dried white beans in a large pot, cover with plenty of cold water, and leave to soak for 8 hours or overnight. Drain and rinse well.
- Heat the oven to 190°C (375°F). Peel and halve 4 garlic cloves; strip the leaves from 2 rosemary sprigs.
- Pat the lamb dry, then use the tip of a knife to make small slits all over. Push the halved garlic and rosemary leaves into the slits, then rub the lamb all over with the olive oil, fine sea salt, and black pepper.
- Set the lamb in a roasting pan and roast for 75 to 90 minutes, basting once or twice, until browned and tender. For medium, aim for an internal temperature of about 60°C (140°F), then rest; for well done, cook to about 70°C (160°F).
- Transfer the lamb to a board, cover loosely, and rest for 20 minutes. Pour off excess fat from the roasting pan, leaving the juices behind.
- Peel and finely chop the yellow onion, then finely chop the remaining 2 garlic cloves. Put the roasting pan over a medium heat, add the onion, and cook for 5 to 7 minutes until softened, scraping up any browned bits.
- Add the dry white wine and simmer for 2 to 3 minutes to reduce slightly. Tip in the drained beans, add the chicken stock and the remaining rosemary sprig, then bring to a gentle simmer.
- Simmer the beans gently for 45 to 60 minutes until tender and the liquid is glossy and savoury, topping up with a little water if needed to keep the beans just covered. Taste and adjust seasoning with a little more fine sea salt and black pepper if needed, then discard the rosemary sprig.
- Carve the lamb into slices. Spoon the beans and their juices onto plates and lay the lamb over the top to serve.
Recipe notes
Tips
- If you have time, salt the lamb 30 minutes before roasting for deeper seasoning, then rub with the olive oil just before it goes into the oven.
- Keep the bean simmer very gentle so the skins stay intact and the cooking liquid turns naturally creamy.
- If serving vulnerable groups, cook the lamb to at least 70°C (160°F) and rest well before carving.
Substitutions
- Replace Dry White Wine with Chicken stock for an alcohol-free version; add it in the same amount and simmer briefly to concentrate.
- Replace Fresh rosemary with a smaller amount of dried rosemary for a similar flavour, adding it to the olive oil rub so it blooms as the lamb roasts.
Storage
- Refrigerate up to 3 days
- Cool the lamb and beans quickly, then refrigerate in separate airtight containers. Reheat the beans gently in a saucepan with a splash of water until piping hot, and warm the lamb in a 180°C (355°F) oven, covered, until hot through.
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Recipe overview
- Servings: 4 servings
- Total time: 2h 30min (30min active)
- Difficulty: Easy
- Cuisine: French
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