Cordero Asado de Navidad (Spanish Christmas Roast Lamb)
Why this recipe works
- Slow-roasted tenderness: Gentle roasting gives the bone-in lamb time to become tender while keeping the meat juicy.
- Simple, aromatic seasoning: Garlic, rosemary, olive oil and wine create a savoury pan base without masking the flavour of the lamb.
- Potatoes cook in the juices: Adding the potatoes partway through lets them soften in the lamb fat and wine-rich pan juices.
Get the most out of this recipe
Timing notes
- Rest before carving: Let the lamb rest for the full 15 minutes so the juices settle and the meat slices more cleanly.
- Mostly hands-off cooking: The active work is short; most of the time is slow roasting, basting, turning the potatoes and resting.
- Serve while the potatoes are hot: The potatoes are best served soon after roasting, while they are still tender and coated in the pan juices.
Authenticity notes
- Family-style centrepiece: Cordero asado is commonly served as a generous roast, carved at the table or arranged on a platter with potatoes.
- Simple aromatics: The seasoning is deliberately restrained: garlic, herbs, olive oil and wine support the lamb rather than turning it into a heavily spiced roast.
Common mistakes
- Avoid roasting too hot too early: Keeping the oven moderate helps the lamb cook evenly before any optional final browning.
- Do not let the pan dry out: A thin layer of wine and juices in the base prevents scorching and keeps the pan juices usable for serving.
- Use the thermometer away from the bone: Check the thickest part of the meat away from the bone for the most reliable reading.
Make-ahead tips
- Season ahead if useful: The garlic and rosemary paste can be rubbed over the lamb in advance, then refrigerated and brought closer to room temperature before roasting.
- Reheat with moisture: Leftover carved lamb reheats best covered with some pan juices or a splash of water in a 180°C (355°F) oven until piping hot.
- Freeze with pan juices: Freeze carved lamb with a little of the pan juices to help protect the texture when reheating.
Equipment you'll need
Ingredients
Instructions
- Heat the oven to 160°C (320°F). Peel the garlic and strip the rosemary leaves from the sprigs. Pat the lamb dry and set it in a roasting pan.
- Pound the garlic with the rosemary, fine sea salt, black pepper and olive oil to make a rough paste. Rub the paste all over the lamb, working it into any seams and around the bone. Pour the white wine into the roasting pan around the lamb.
- Roast for 60 minutes, basting once or twice with the pan juices. Meanwhile, scrub the potatoes and cut them into large chunks so they hold their shape. If the pan looks dry at any point, add a splash more wine from the measured amount to keep a thin layer of liquid in the base.
- Add the potatoes to the pan, turning them in the lamb fat and juices. Continue roasting for 50 to 70 minutes, turning the potatoes once, until the potatoes are tender and the lamb is cooked to your liking. For medium, aim for 60°C (140°F) in the thickest part, away from the bone.
- Transfer the lamb to a board and rest for 15 minutes. Spoon the potatoes onto a serving platter and skim any excess fat from the pan juices if you like. Carve the lamb and serve with the potatoes and the pan juices spooned over.
Recipe notes
Tips
- For the best crust, keep the lamb surface as dry as possible before rubbing on the garlic and rosemary paste.
- If you prefer a deeper colour, increase the oven to 220°C (430°F) for the final 10 minutes, watching closely so the garlic does not burn.
- Food safety: if serving anyone who is pregnant, elderly, or immunocompromised, cook the lamb to at least 70°C (160°F) and rest as directed.
Substitutions
- Replace Fresh rosemary with fresh thyme for a softer, more floral herb note.
- Replace Dry White Wine with dry red wine for a fuller, more robust pan juice.
Storage
- Refrigerate up to 3 days
- Cool leftovers quickly, then refrigerate in a sealed container with the pan juices. Reheat lamb and potatoes in a 180°C (355°F) oven, covered, until piping hot; add a splash of water to loosen the juices if needed. Freeze carved lamb with a little pan juice for best texture, and thaw overnight in the fridge before reheating.
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Recipe overview
- Servings: 4 servings
- Total time: 2h 50min (20min active)
- Difficulty: Medium
- Cuisine: Spanish
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