Roast Leg of Lamb

4.8
(138)

This leg of lamb recipe is simple to prepare with thin slices of garlic and rosemary. Cooking peeled potatoes in the pan around the roast is yummy. The only other things you need are gravy made from the pan drippings and a fresh vegetable.

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Finished Roast Leg of Lamb Recipe with roasted vegetables.
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Prep Time:
15 mins
Cook Time:
1 hr 45 mins
Additional Time:
10 mins
Total Time:
2 hrs 10 mins
Servings:
12

This roast leg of lamb is tender, juicy, and full of flavor. 

How to Cook Leg of Lamb

You'll find a detailed ingredient list and step-by-step instructions in the recipe below, but let's go over the basics:

How to Season Leg of Lamb

Wondering what ingredients you’ll need for this roasted leg of lamb? The top-rated recipe is simply seasoned with salt, pepper, fresh garlic, and fresh rosemary. 

How to Cook Leg of Lamb

Here’s a brief overview of what you can expect when you roast leg of lamb at home:

  1. Cut slits into the meat and insert the garlic into the slits. 
  2. Season and place lamb on a roasting pan with rosemary. 
  3. Roast until the lamb reaches 135 degrees F.
  4. Cover and let rest before serving. 

What to Serve With Leg of Lamb

Wondering what goes well with roasted leg of lamb? We’ve got you covered with our collection of Flavor-Packed Side Dishes for Lamb. Here are a few of the tasty recipes that are featured: 

How to Store Leg of Lamb

If you have leftover roasted leg of lamb, store it in an airtight container in the refrigerator for up to three days. Reheat in the oven.

Allrecipes Community Tips and Praise

“This was an excellent way to make the lamb,” raves KCUTOLO. “It came out very tender and juicy! I added a little red wine to the juices about 15 minutes before it was finished roasting..... made the au jus taste wonderful!”

“Excellent and moist lamb,” according to Jane Mac. “I served this for New Year's Eve dinner with mint sauce, rosemary potatoes, and steamed veggies. Outstanding!”

“It was a thing of beauty and so incredibly delicious,” says HisRagamuffin. “My picky eater had two servings!! In addition to putting red potatoes in to roast with the lamb, I quartered an onion and added it as well as an extra couple of garlic cloves. Wonderful Easter meal!”

Editorial contributions by Corey Williams

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Ingredients

Original recipe (1X) yields 12 servings

  • 5 pounds leg of lamb

  • 4 cloves garlic, sliced

  • salt and ground black pepper to taste

  • 2 tablespoons fresh rosemary

Directions

  1. Gather all ingredients. Preheat the oven to 350 degrees F (175 degrees C).

    Raw leg of lamb with garlic and spices on paper.

    ALLRECIPES / ANA CADENA

  2. Cut deep slits on the top of leg of lamb every 3 to 4 inches; push slices of garlic down into the slits. Generously season with salt and pepper.

    Studded garlic cloves in leg of lamb before roasting.

    ALLRECIPES / ANA CADENA

  3. Place lamb on a roasting pan; arrange several sprigs of fresh rosemary under and on top of the lamb.

    Prepared roast leg of lamb with rosemary on rack.

    ALLRECIPES / ANA CADENA

  4. Roast in the preheated oven for 1 3/4 to 2 hours, or until an instant-read thermometer inserted into the center of the lamb reads at least 135 degrees F (57 degrees C) for medium-rare to medium doneness.

    Roast leg of lamb cooking in oven.

    ALLRECIPES / ANA CADENA

  5. Cover lamb with aluminum foil and let rest for at least 10 minutes before carving.

    Roast leg of lamb covered in foil to rest.

    ALLRECIPES / ANA CADENA

  6. Serve with your favorite sides, enjoy!

    Finished Roast Leg of Lamb Recipe with roasted vegetables.

    ALLRECIPES / ANA CADENA

346 home cooks made it!

Nutrition Facts (per serving)

382 Calories
25g Fat
0g Carbs
36g Protein
Nutrition Facts
Servings Per Recipe 12
Calories 382
% Daily Value *
Total Fat 25g 32%
Saturated Fat 11g 55%
Cholesterol 136mg 45%
Sodium 136mg 6%
Total Carbohydrate 0g 0%
Dietary Fiber 0g 0%
Protein 36g 72%
Vitamin C 0mg 0%
Calcium 24mg 2%
Iron 3mg 18%
Potassium 410mg 9%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.