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4.3 from 105 votes

Herb Roast Leg of Lamb Recipe

Herb Roast Leg of Lamb is an easy lamb recipe using fresh herbs, seasonings and high temperatures sear a nice crust leaving the instead nice & juicy.

Prep Time
10 mins
Cook Time
1 hr
Total Time
1 hr 10 mins
Servings: 4
Calories: 531 kcal
Course: Main Course
Cuisine: American

Ingredients

  • 5-6 pound boneless leg of lamb*
  • 2-3 large garlic cloves thinly sliced
  • 1 tablespoon coarse sea salt
  • 1 teaspoon black pepper
  • 2 tablespoons Dijon mustard
  • 1 1/2 tablespoons fresh Rosemary finely chopped
  • 1 1/2 tablespoons fresh thyme finely chopped
  • 4-5 rosemary and thyme sprigs
  • 2 tablespoons light extra virgin olive oil
  • Mint jelly optional

Instructions

    Cup of Yum
  1. Preheat oven to 500 degrees. Prepare a 9x13 roasting pan by spreading light extra virgin olive oil in the bottom and then laying springs of fresh herbs on the center, a nice bed of aromatics for your leg of lamb to rest on while it roasts.
  2. Place boneless leg of lamb on a clean work surface, like a cutting board. Pierce the top with a knife, making slits deep enough for garlic slices. Fill the slits with garlic. Next, rub the surface with coarse sea salt and pepper. Slather with Dijon mustard and finally press fresh, chopped rosemary and thyme into the Dijon mustard. Transfer boneless leg of lamb to the prepared roasting dish.
  3. Place into the hot oven for 20 minutes. This will create a nice crust and seal in juices.
  4. After 20 minutes, lower heat to 350 degrees. Open oven door to allow excess heat to escape and cool down the oven fast. Continue to roast for 40-60 minutes. Time will vary greatly depending on size of your leg of lamb and your preferred level of doneness.
  5. Remove roast after reaching desired temperature. Allow to rest for 15 minutes before carving. Carve against the grain and serve with a side of mint jelly.
  6. If you've tried this recipe, come back and let us know how it was in the comments or ratings.

Notes

  • Easily chop fresh herbs using kitchen shears or a mini food processor. 
  • *You can use this recipe with a bone-in leg of lamb as well. 

Nutrition Information

Calories 531kcal (27%) Carbohydrates 2g (1%) Protein 74g (148%) Fat 23g (35%) Saturated Fat 6g (30%) Cholesterol 228mg (76%) Sodium 2051mg (85%) Potassium 1058mg (30%) Vitamin A 145IU (3%) Vitamin C 4.7mg (5%) Calcium 39mg (4%) Iron 7.2mg (40%)

Nutrition Facts

Serving: 4Serving

Amount Per Serving

Calories 531

% Daily Value*

Calories 531kcal 27%
Carbohydrates 2g 1%
Protein 74g 148%
Fat 23g 35%
Saturated Fat 6g 30%
Cholesterol 228mg 76%
Sodium 2051mg 85%
Potassium 1058mg 23%
Vitamin A 145IU 3%
Vitamin C 4.7mg 5%
Calcium 39mg 4%
Iron 7.2mg 40%

* Percent Daily Values are based on a 2,000 calorie diet.