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July 10, 2019

Anchovy-Garlic Butter Rubbed Whole Roasted American Lamb Leg with Potatoes


Prep Time

20 min

Cook Time

2 hrs

Total Time

2 hrs 20 min



Roasted American Lamb Leg with Potatoes


  • 1 (5 to 7 pound) bone-in whole American Lamb leg, aitchbone removed by butcher
  • 4 cloves garlic, minced
  • 1/2 cup unsalted butter, room temperature
  • 2 tablespoons anchovy paste
  • 1 teaspoon Dijon-style mustard
  • Freshly ground black pepper, as needed
  • Kosher salt, as needed
  • 2 pounds small Yukon gold potatoes, halved
  • 2 tablespoons extra-virgin olive oil
  • 2 springs fresh rosemary
  • 3 lemons, halved


Using a sharp knife, remove the fell (a tough layer of fat) from lamb leg if necessary. Trim fat cap so that it is about 1/4-inch thick. Make 1/2-inch-deep incisions with a sharp knife all over the meat so the rub can penetrate. 

In a small mixing bowl, stir together garlic, butter, anchovy paste and mustard. Season lamb all over with salt and pepper; rub the paste all over the lamb. 

Position lamb on a rack set in a roasting pan so the fat-cap side is down. Roast at 450°F until lamb is browned, about 15 minutes. Rotate the lamb so fat-side is up; reduce heat to 350°F. Roast lamb for 45 minutes. 

In a medium mixing bowl, toss together potatoes, oil and rosemary; arrange under the rack holding the lamb. Continue roasting until internal temperature of the lamb reaches 130ºF, 45 minutes to 1 hour. 

Remove lamb from the pan to a large cutting board; let rest, tented with aluminum foil, 15 minutes. 

Heat a grill pan over medium-high heat; add lemons cut-side down and cook until grill marks appear, about 3 minutes. Remove; set aside. 

Carve lamb against the grain into 1/2-inch slices; serve on a platter with potatoes and lemons arranged around the board.

USDA recommends the following time and temperature parameters

Ground Lamb

Internal temperature of 160°F

All Other Cuts

Internal temperature of 145°F, with a 3 minute rest

Roasted American Lamb Leg with Potatoes on baking rack
Roasted American Lamb Leg with Potatoes with sides on a table
thermometer timer illustration
Visit our Lamb Cooking Time & Temperature page for recipe inspiration and tips on preparing the perfect lamb.


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