This oven-baked leg of lamb with potatoes is a comforting and elegant dish that delivers tender, juicy meat infused with garlic and rosemary, paired with golden, flavorful potatoes. Perfect for family dinners or special gatherings, this classic recipe is simple to prepare yet impressive to serve.

Why You’ll Love This Recipe

This recipe combines rich, savory flavors with minimal preparation. The lamb roasts slowly, absorbing the aromas of fresh rosemary and garlic, while the potatoes cook in the delicious pan juices. It requires only a handful of wholesome ingredients and delivers restaurant-quality results at home. The natural roasting process keeps the meat tender and juicy, making it a reliable centerpiece for any meal.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

1 whole leg of lamb (about 2 kg)

1 kg potatoes, peeled and cut into large chunks

4 garlic cloves, sliced

3 fresh rosemary sprigs

60 ml olive oil (4 tablespoons)

240 ml dry white wine (1 glass)

2 teaspoons salt

1 teaspoon freshly ground black pepper

Directions

1. Preheat the oven to 180°C (350°F).
2. Pat the leg of lamb dry with paper towels. Using a sharp knife, make small incisions all over the surface of the lamb.
3. Insert the sliced garlic and small pieces of rosemary into the cuts, distributing them evenly throughout the meat.
4. Place the lamb in a large roasting tray. Arrange the potato chunks around the lamb in a single layer.
5. Drizzle the olive oil evenly over the lamb and potatoes. Season everything with salt and black pepper.
6. Pour the white wine into the bottom of the roasting tray, avoiding pouring directly over the top of the lamb to preserve the seasoning.
7. Roast in the preheated oven for approximately 1 hour and 30 minutes, or until the lamb is golden brown and the potatoes are tender. For medium doneness, the internal temperature should reach about 60–65°C.
8. Every 20–30 minutes, spoon the pan juices over the lamb to keep it moist and flavorful.
9. Once cooked, remove the lamb from the oven and let it rest for 10–15 minutes before slicing. This allows the juices to redistribute throughout the meat.
10. Serve hot with the roasted potatoes and spoon extra pan juices over the top.

Servings and timing

Prep time: 20 minutes
Cook time: 1 hour 30 minutes
Total time: 1 hour 50 minutes

Servings: 4 servings

Approximate calories per serving: 450 calories

Variations

For deeper flavor, marinate the lamb for 4–6 hours before roasting using olive oil, garlic, rosemary, lemon juice, salt, and pepper.

You can add vegetables such as carrots, onions, or zucchini to the roasting tray for a more complete meal.

For a richer sauce, remove the lamb once cooked and simmer the pan juices on the stovetop for 5–10 minutes until slightly reduced.

If you prefer a crispier exterior, increase the oven temperature to 200°C during the final 10 minutes of roasting.

Storage/Reheating

Store leftover lamb and potatoes in an airtight container in the refrigerator for up to 3 days.

To reheat, place the lamb slices and potatoes in a baking dish, add a few tablespoons of water or broth, cover with foil, and warm in a 160°C oven for about 15–20 minutes until heated through.

You can also reheat individual portions in the microwave in short intervals, covering the plate to prevent the meat from drying out.

For longer storage, the cooked lamb can be frozen for up to 2 months. Thaw overnight in the refrigerator before reheating.

FAQs

How do I know when the leg of lamb is fully cooked?

Use a meat thermometer. For medium doneness, the internal temperature should reach 60–65°C. For well done, aim for 70°C.

Can I prepare this recipe ahead of time?

Yes, you can season and prepare the lamb several hours in advance and keep it refrigerated until ready to roast.

Should I cover the lamb while roasting?

It is not necessary, but if the top browns too quickly, loosely cover it with foil to prevent over-browning.

Can I use dried rosemary instead of fresh?

Yes, but use about 1 teaspoon of dried rosemary since dried herbs are more concentrated in flavor.

What type of potatoes work best?

Yukon Gold or other waxy potatoes hold their shape well and roast beautifully.

Can I substitute the white wine?

Yes, you can use vegetable broth or water with a splash of lemon juice as an alternative.

Why should the lamb rest before slicing?

Resting allows the juices to redistribute, keeping the meat moist and tender when sliced.

Can I cook this at a higher temperature?

Cooking at a higher temperature may shorten the cooking time but can make the meat less tender. Slow roasting yields the best results.

How can I make the potatoes crispier?

Make sure they are spread in a single layer and not overcrowded. You can also increase the oven temperature slightly during the final 10–15 minutes.

Can leftovers be used in other dishes?

Yes, leftover lamb can be sliced for sandwiches, added to salads, or mixed into rice or vegetable dishes.

Conclusion

Oven-baked leg of lamb with potatoes is a timeless, flavorful dish that combines simplicity with elegance. With tender, aromatic meat and perfectly roasted potatoes, it is ideal for both everyday meals and special occasions. Follow these detailed steps and tips to achieve a juicy, golden result every time.

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