An easy oven roasted boneless leg of lamb recipe. Rub with olive oil and spices, then roast in the oven to medium rare. The result is tender, juicy and flavorful!
In this easy leg of lamb recipe, I use a 4-pound, semi-boneless leg of lamb, imported from New Zealand, that I buy in my local supermarket.
Lamb is by far my favorite meat. Especially New Zealand or Australian lamb, which tends to be relatively lean, gamey and very, very flavorful. Lamb is also healthy – it is a good source of omega-3 fats.
When I want to roast a big piece of meat, for a holiday or for a large gathering, my two most common choices are either ribeye roast, or roasted leg of lamb.
What is the best way to cook a leg of lamb?
In my opinion, it’s best to roast it in the oven. A leg of lamb has a wonderful fat cap, and oven roasting browns it nicely. You COULD use a slow cooker, but in my opinion, it won’t be as good. The fat cap won’t brown, and the lean meat can easily dry out during prolonged cooking.
Do you sear a leg of lamb before roasting?
You could, but it’s really not a fun thing to do and I don’t think it’s necessary. You can achieve a similar result by roasting briefly at a high temperature, then lowering the heat and continuing to roast until the meat is done.
At what temperature do you cook a leg of lamb?
I start at 425°F for 15 minutes to brown the fat cap. Then lower the heat to 375°F and continue roasting until the meat is medium-rare.
How long does it take to roast a leg of lamb?
You really want to make sure that the meat stays medium-rare. Any more than that and it becomes dry and tough and loses much of its flavor. So it’s best to use a meat thermometer when roasting.
As a general guideline, after roasting at high heat for 15 minutes, you should keep roasting a boneless leg of lamb for about 20 minutes per pound.
As with all roasts, it’s important to allow the meat to rest for at least 15 minutes before slicing it. You want to give the juices a chance to settle and redistribute before you cut into the meat.
What to serve with roasted leg of lamb?
What about leftovers?
You can keep leftovers in the fridge, in a sealed container, for up to 4 days. Leftover leg of lamb is very good when very gently reheated in the microwave, covered, on 50% power. But make sure you don’t overcook it in the microwave or it will become dry and inedible. I also love eating cold slices of leftover leg of lamb with homemade quick pickles.
Leg of Lamb Recipe
- 2 tablespoons olive oil
- 1 tablespoon minced garlic
- 1 teaspoon kosher salt
- 1 teaspoon dried rosemary
- 1/2 teaspoon dried thyme
- 1/4 teaspoon freshly ground black pepper
- 4 lb. Bone-in leg of lamb
- In a small bowl, mix together the olive oil, garlic, salt, rosemary, thyme and black pepper.
- Rub the olive oil mixture all over the leg of lamb. Place the leg of lamb, flat side down, in a roasting pan on a greased rack. Allow to rest on the counter, at room temperature, for 1 hour.
- Preheat oven to 425 degrees F.
- Roast the lamb for 15 minutes in the 425 degree oven.
- Lower the oven temperature to 375 degrees F and continue roasting 1 hour and 20 minutes (about 20 minutes per pound), or until an instant-read thermometer inserted in the thickest part of the leg and not touching the bone registers 135 degrees F for medium-rare.
- Remove the lamb from the oven, cover loosely with foil and allow to rest for 15 minutes before carving. Once you're done carving the lamb, don't discard the tasty bone - use it to make rich, flavorful bone broth.