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Roasted Boneless Leg of Lamb Recipe

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  • Author: Evelyn
  • Prep Time: 10 minutes
  • Cook Time: 1 hour 30 minutes
  • Total Time: 1 hour 40 minutes
  • Yield: 8 servings 1x
  • Category: Main-course
  • Method: Roasting

Description

This Roasted Boneless Leg of Lamb is a flavorful and tender centerpiece for any special occasion. Infused with garlic and rosemary, and roasted to your desired doneness, it’s a simple yet elegant dish that’s sure to impress.


Ingredients

Units Scale

Boneless Leg of Lamb Roast:

  • 45 pounds boneless leg of lamb
  • 57 large garlic cloves, cut into slivers
  • 2 tablespoons extra virgin olive oil
  • 2 tablespoons dried rosemary
  • 1 1/4 teaspoons salt
  • Ground black pepper, to taste

Roasted Potatoes After (Optional):

  • 2 pounds potatoes, cubed
  • 2 large carrots, sliced
  • 1/2 tablespoon garlic powder
  • 3/4 teaspoon salt
  • Ground black pepper

Instructions

  1. Preheat Oven: Preheat oven to 425°F (220°C).
  2. Prepare Lamb: In a roasting pan or Dutch oven, place lamb. Make 20-30 inserts with a paring knife. Stick garlic slivers into each opening.
  3. Season Lamb: Rub roast with olive oil. Sprinkle one side with half of the rosemary, salt, and pepper. Turn and repeat on the other side.
  4. Roast Lamb: Bake uncovered until desired doneness:
    • Medium Rare: 130-135°F (54-57°C) internal temperature – about 16 minutes/pound.
    • Medium Well: 140-145°F (60-63°C) internal temperature – about 18 minutes/pound.
    • Well-Done: 150-155°F (66-68°C) internal temperature – about 20 minutes/pound.
  5. Check Temperature: For a 4-5 pound roast, check internal temperature after 1 hour. For a 2-3 pound roast, check after 45 minutes.
  6. Rest Lamb: Remove lamb from oven and let rest uncovered for 15 minutes.
  7. Remove Casing: Remove and discard the casing.
  8. Slice and Serve: Slice lamb into 1/4 inch slices against the grain. Serve warm.

Roast Potatoes in Fat Drippings (Optional):

  1. Prepare Drippings: Scoop out 1 cup of fat and drippings from the pan, leaving the rest.
  2. Add Vegetables: Add potatoes, carrots, garlic powder, salt, and pepper. Stir well.
  3. Roast Vegetables: Bake at 450°F (230°C) for about 35 minutes or until fork-tender.

Notes

  • Make Ahead: Stuff and season roast, cover, and refrigerate for 24 hours. Let come to room temperature before roasting.
  • Store: Refrigerate roast whole or sliced in an airtight container for up to 5 days.
  • Freeze: Freeze leftovers sliced or cut into bite-sized pieces in an airtight container for up to 3 months. Thaw in the refrigerator.
  • Keep Casing On: Do not remove the casing before cooking; it holds the meat together.
  • Adjust for Oven: Check with an internal meat thermometer 1/2 hour before the end of cooking time.
  • Resting: Internal temperature will rise while meat is resting.

Nutrition

  • Serving Size: 1 serving
  • Calories: 175 kcal
  • Sugar: 1g
  • Sodium: 362 mg
  • Fat: 8g
  • Saturated Fat: 2g
  • Unsaturated Fat: 6g
  • Trans Fat: 73g
  • Carbohydrates: 7g
  • Fiber: 1g
  • Protein: 1g
  • Cholesterol: 24mg