Cordero Asado (Spanish Roast Lamb with Garlic and Rosemary)

Cordero asado is the Spanish approach to roast lamb: simple, aromatic and centred on well-seasoned meat rather than a heavy sauce. A bone-in leg is flavoured with garlic, rosemary, olive oil and sea salt, then roasted with white wine, stock and lemon so the juices become bright, savoury and spoonable. The result should be tender lamb with browned edges, fragrant herbs and a clean citrus lift that cuts through the richness. It suits a relaxed Sunday lunch or a more festive dinner, especially with potatoes, greens or crusty bread to catch the pan juices.
Cuisine style Spanish roast dinner
Flavor profile Savoury • Garlicky • Herby • Bright lemon
Techniques High-heat browning • Roasting • Basting
Key equipment Roasting pan • Meat thermometer
Cooking style Make-ahead friendly • Crowd-friendly

Why this recipe works

  • Aromatic seasoning: Garlic, rosemary and olive oil are worked into small slits in the lamb, helping the seasoning flavour the meat beyond the surface.
  • Tender meat, browned edges: A hot start encourages colour and savoury crusting before gentler roasting finishes the lamb evenly.
  • Bright pan juices: White wine and roasted lemon cut through the richness of the lamb, creating a lighter sauce for spooning over the carved meat.

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Timing notes

  • Mostly hands-off: The active work is mainly seasoning, setting up the roasting pan and carving; the oven does most of the cooking.
  • Rest before carving: Let the lamb rest as directed so the juices settle and the slices stay moist.
  • If marinated ahead: After chilling the rubbed lamb, bring it back towards room temperature before roasting for more even cooking.

Ingredient notes

  • Bone-in lamb: A bone-in leg gives a traditional carved roast with good flavour and a more dramatic centrepiece.
  • Use a dry wine: A dry white wine keeps the pan juices savoury rather than sweet.
  • Roasted lemon finish: Squeezing the roasted lemon into the pan juices at the end adds brightness without making the sauce harsh.

Common mistakes

  • Do not rely on time alone: Use a thermometer to judge doneness, especially with larger or smaller lamb legs.
  • Watch the pan juices: If the roasting pan starts to dry out, add a little more stock so the juices do not catch and turn bitter.
  • Avoid carving too soon: Skipping the rest can make the lamb lose more juice on the board.

Make-ahead tips

  • Season in advance: The garlic, rosemary and olive oil rub can be applied ahead of time for deeper flavour.
  • Reheat gently: Warm leftovers covered with some pan juice in a 180°C (355°F) oven until piping hot.
  • Freeze with pan juices: Leftover lamb freezes best when well wrapped with a little of the cooking juices to help protect the texture.

Equipment you'll need

Ingredients
Instructions
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  1. Heat the oven to 220°C (430°F). Pat the lamb dry, then use the tip of a knife to make small slits all over the surface.
  2. Crush the garlic to a paste with most of the sea salt flakes and black pepper, then strip and finely chop the rosemary leaves and mix in with the olive oil. Rub this all over the lamb, working it into the slits.
  3. Put the lamb in a roasting pan. Pour in the dry white wine and chicken stock around the lamb, then halve the lemon and tuck it into the pan cut-side up.
  4. Roast for 20 minutes to start browning, then reduce the oven to 170°C (340°F). Continue roasting for 70 to 80 minutes, basting once or twice, until the lamb is tender and a thermometer reads about 60°C (140°F) for medium or 65°C (150°F) for medium-well.
  5. Transfer the lamb to a board and rest for 15 minutes. Skim any excess fat from the pan juices, then squeeze in the roasted lemon and stir to combine.
  6. Carve the lamb and spoon over the pan juices. Finish with the remaining sea salt flakes and a final grind of black pepper just before serving.

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Recipe notes

Tips

  • For deeper flavour, rub the lamb with the garlic, rosemary and olive oil up to 12 hours ahead, then keep covered in the fridge and bring back towards room temperature for 30 minutes before roasting.
  • If the pan looks dry at any point, add a splash more chicken stock to keep the juices from catching.
  • If serving pregnant people, young children, older adults, or anyone 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 sherry for a richer, nuttier pan juice.

Storage

  • Refrigerate up to 3 days
  • Cool leftovers quickly, then refrigerate in a sealed container with a little of the pan juice. Reheat covered in a 180°C (355°F) oven until piping hot, or slice cold for sandwiches; freeze well wrapped for up to 2 months and defrost overnight in the fridge before reheating.

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Cordero Asado (Spanish Roast Lamb with Garlic and Rosemary)
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Recipe overview

  • Servings: 4 servings
  • Total time: 2h 5min (25min active)
  • Difficulty: Medium
  • Cuisine: Spanish
Freezer friendly

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