Slow Roasted Boneless Leg of Lamb

This succulent Slow Roasted Boneless Leg of Lamb makes a stunning center piece for your Sunday Dinner, Holiday, or Celebration. Seasoned with herbs, citrus, and garlic, this perfectly roasted Greek style lamb is melt in your mouth delicious! 

This post first appeared over at Noshing With The Nolands where I’m a contributor. 

Today I’m excited to bring you my very first recipe for Boneless Leg of Lamb. Let me tell you…the smell of this lamb roasting in my kitchen all day had me drooling like crazy! Later on, when we sat down to tuck into this delicious spread, I served it with this easy Oven Roasted Asparagus (which I made while the lamb was resting) and our favourite new recipe…Hasselback Potatoes.

A platter filled with a boneless roasted leg of lamb, potatoes, asparagus, roaster garlic, and charred lemon.

Let’s face it. Cooking a large roast for a big dinner can be intimidating, especially if it’s your first time. Lamb is also quite polarizing in that there are some who do not enjoy its game-y flavour. However, do not worry I am here to hold your hand the entire way! 

Don’t be put off by the long cooking time of this recipe. It’s a key component in roasting the best lamb possible and when compared to roasting a stuffed turkey, it takes roughly the same amount of time. Delicious food is worth the wait.

Roasting the lamb using this low ‘n’ slow Greek-style method is guaranteed to give you the most fabulous, fall apart tender lamb. Serve it to the non-believers and they’ll be lamb fans in no time. 

A platter filled with a boneless roasted leg of lamb, potatoes, asparagus, roaster garlic, and charred lemon.

Fast vs. Slow Roasted Leg of Lamb

There are two ways to roast a Leg of Lamb; fast or slow. Cooking the lamb quickly (relative to the latter method) is always a bit of a gamble because the lamb should be cooked to medium rare (145 F). You must use a thermometer to gauge the precise moment just before the lamb reaches this stage, then remove the lamb from the oven and let it rest. As you can imagine, it’s quite easy to over cook lamb this way.

With slow roasting, there is less worry about over cooking the lamb because that’s exactly what you want to do (sort of). Slow cooking lamb brings it beyond that tough, dry phase, to melt in your mouth goodness. The consistent low temperature breaks down the fat and connective fibers within the meat structure, causing the meat to become fork tender.

Lastly, it is possible to still overcook the lamb using the low and slow method. Be aware of the size of your lamb roast and the recommended cooking time and temperature. 

A platter filled with a boneless roasted leg of lamb, potatoes, asparagus, roaster garlic, and charred lemon.

Bone in vs. Boneless Leg of Lamb 

Generally, bone-in meat will always have more flavour than the same cut with the bone removed. This is because the bone will impart deeper flavours within the meat. However, roasting bone-in meat takes up more space in the pan (hint: take your roaster along to ensure it fits!) and requires even more cooking time. Boneless is the way to go for space consideration and ease of serving. This recipe will cook a great leg of lamb, regardless of which style you use. 

A platter filled with a boneless roasted leg of lamb, potatoes, asparagus, roaster garlic, and charred lemon.

How to Prepare a Boneless Leg of Lamb for Roasting

Boneless lamb leg bought from a store will come neatly wrapped in an elastic netting. There’s a reason for this and the ONLY reason you should remove it is if you are planning on stuffing it. Otherwise, leave it as is and read on to find out how to make this delicious recipe. 

How to Roast a Boneless Leg of Lamb…Greek Style!

Step 1 – Remove the lamb from the fridge and allow it to warm up to room temperature. Preheat the oven to 450 F. Carefully make 12 slits around the entire roast and insert the garlic clove halves deep into each slit. Rub the lamb with olive oil and season with salt and pepper. Place on a rack in a shallow roasting pan and roast for 30 minutes.

Step 2 – Once the lamb is well browned, remove it from the oven and place (fat side down) in a Dutch oven or lidded roaster containing the rest of the ingredients (other than half the gremolata). Check to make sure the liquid level is covering 1/4 to 1/3 of the lamb leg. Decrease the oven temperature to 350 F and roast for 2 hours. Top up liquid level with boiling water, if needed. 

Step 3 – Flip the lamb leg over so the fat cap is on top and roast (covered) for another 1 – 1 1/2 hours or until the meat pulls apart easily. 

Step 4 – Remove the lid and roast for another 30 minutes to get all those nice crispy bits. Remove the lamb leg from the Dutch oven and place on a serving dish. Cover with foil and allow to rest for 20 minutes. Shred the roast and serve with strained pan juices. 

A fork holding pulled lamb meat above a platter filled with a boneless roasted leg of lamb, potatoes, asparagus, roaster garlic, and charred lemon.

What to Serve with Roasted Boneless Leg of Lamb

While this Greek style roasted lamb leg is delicious on its own, the fresh herb Gremolata with lemon zest and garlic really brightens up the flavour. Who can say no to ‘extra garlic’? Additionally, it makes a great topping to roasted potatoes and any vegetables you might serve with the roast. 

Why not make it an entire Greek feast? Serve it alongside an authentic Horiataki (Greek Salad), warmed briny olives, pitas with whipped feta, lemon roasted potatoes, and finish with baklava, of course!

*adapted from Greek Slow Roasted Leg of Lamb by Recipe Tin Eats.

Silver tongs holding pulled lamb meat above a platter filled with a boneless roasted leg of lamb, potatoes, asparagus, roaster garlic, and charred lemon.

How to Reheat Lamb Leftovers

Here’s where those delicious pan juices save the day! Just place the shredded lamb meat in a small pot and cover with the pan juices and heat them up on medium until the start to simmer. Reduce heat and simmer for a few more minutes. Once the meat is heated through, enjoy it in a sandwich, Greek wrap, or on top of a bed of creamy mashed potatoes. 

Pin This Roasted Leg of Lamb HERE

Pinterest image of a platter filled with pulled roasted leg of lamb, potatoes, asparagus, roaster garlic, and charred lemon.

Yield: 8 servings

Slow Roasted Boneless Leg of Lamb

A platter filled with a boneless roasted leg of lamb, potatoes, asparagus, roaster garlic, and charred lemon.

This succulent Slow Roasted Boneless Leg of Lamb makes a stunning center piece for your Sunday Dinner, Holiday, or Celebration. Seasoned with herbs, citrus, and garlic, this perfectly roasted Greek style lamb is melt in your mouth delicious!

Prep Time 30 minutes
Cook Time 4 hours 30 minutes
Additional Time 20 minutes
Total Time 5 hours 20 minutes

Ingredients

  •  5 lb (2.2 kg) boneless leg of lamb
  • 6 cloves garlic; peeled and sliced in half lengthwise
  • Olive Oil
  • Salt and pepper
  • 1 cup white wine
  • 2 cups hot chicken stock
  • 2 bay leaves 
  • 5 sprigs fresh thyme
  • 2 onions; sliced into wedges
  • 1/2 cup lemon juice 

FOR THE GREMOLATA

  • 2 tbsp fresh rosemary; chopped
  • 2 tbsp fresh thyme leaves
  • 1 tsp dried oregano leaves
  • 2 tbsp minced garlic
  • 1 tsp sea salt
  • 1 lemon; zested and juiced
  • 2 tbsp olive oil

Instructions

  1. Preheat oven to 450 F.
  2. Using a small paring knife, make 12 slits at equal intervals all over the lamb. Insert the halved cloves into each slit.
  3. Rub boneless leg of lamb with olive oil and season with salt and pepper.
  4. Place fat side up on a rack over a roasting pan. Roast for 30 minutes or until the lamb has nicely browned.
  5. While the lamb is browning, place the rest of the ingredients in a Dutch oven.
  6. When the lamb is finished browning, place it fat side down in the Dutch oven. Reduce oven temperature to 350 F.
  7. Add boiling water so that the liquid level covers the bottom 1/3 of the lamb.
  8. Add half of the gremolata.
  9. Cover and roast for 2 hours, checking the liquid level after the first hour. Add a bit of boiling water as needed.
  10. After 2 hours, remove the roast from the oven and turn it over. Roast for another 1 1/2 hours or until the meat pulls apart easily.
  11. Remove the lid and roast for a further 30 minutes.
  12. After the lamb has browned nicely, Remove it from the Dutch oven and place it on the serving platter. Cover loosely with foil and let rest for 20 minutes.
  13. While the lamb is resting, carefully remove and large bits in the sauce (onions and thyme sprigs), simmer it and thicken with a flour slurry, if desired.

Nutrition Information:

Yield:

8

Serving Size:

1

Amount Per Serving:Calories: 250Total Fat: 15gSaturated Fat: 5gTrans Fat: 0gUnsaturated Fat: 9gCholesterol: 51mgSodium: 455mgCarbohydrates: 8gFiber: 1gSugar: 3gProtein: 16g

Nutritional calculation was provided by Nutritionix and is an estimation only. For special diets or medical issues please use your preferred calculator.

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24 comments

  1. Laura

    This looks just amazing with so many details that make this dish perfect for any special occasion. Your pictures are beautiful!

    Reply

    1. Bernice Hill

      Thank you so much Laura, it was a lot of fun to plate up this giant platter.

      Reply

  2. Julia

    Absolutely love this roasted lamb dinner Bernice. I have only ever cooked lamb chops before but the leg of lamb is so much more appealing. And the gremolata sounds delicious!

    Reply

    1. Bernice Hill

      Same here! And I’m not a big fan of lamb, but when I’ve had it like this I have enjoyed it every time. The gremolata just adds so much flavour too.

      Reply

  3. Phenie

    A very succulent roasted leg of lamb. I loved how flavourful the juices were. Thank you for this recipe.

    Reply

    1. Bernice Hill

      You are so very welcome Phenie, glad you enjoyed it.

      Reply

  4. Chandice Probst

    This is such a delicious and flavorful recipe! Thank you for making it so easy to follow…

    Reply

    1. Bernice Hill

      Thanks for stopping by Chandice! Glad you enjoyed the recipe.

      Reply

  5. Anna

    This is fantastic looking roast! I love all of the spices you’ve used in the gremolata too! The meat looks super delicious, juicy and so tender!

    Reply

    1. Bernice Hill

      Thank you Anna, it is a really tasty way to enjoy lamb roast!

      Reply

  6. Tara

    I love slow roasted meats and this is the perfect way to cook lamb. So juicy and tender! Also, the gremolata was on point!

    Reply

    1. Bernice Hill

      Thanks Tara! It was such a fun dish to prepare and plate. We had lamb for days!

      Reply

  7. NANCY @instanomss

    running out to buy some lamb for tonight!

    Reply

  8. Analida Braeger

    This dish had the most incredible flavors! My whole family loved it. Thanks so much for sharing!

    Reply

    1. Bernice Hill

      Thank you so much Analida. Glad they enjoyed it!

      Reply

  9. Mama Maggie's Kitchen

    This Slow Roasted Boneless Leg of Lamb is mouthwatering! I have to make this soon for my family!

    Reply

    1. Bernice Hill

      Thank you Maggie, hope you all enjoy that lamb!

      Reply

  10. Terri

    Bernice, this looks incredible and you may just make a lamb lover out of me yet!

    Reply

    1. Bernice Hill

      Thanks Terri. I definitely surprised myself. When it’s done right it can be quite delicious. I think I prefer a ‘well done’ lamb rather than a medium rare lamb for sure.

      Reply

  11. Cynthia at Cynful Kitchen

    I don’t think I have had lamb yet! I will have to try it for next Easter. Looks and sounds amazing!!

    Reply

    1. Bernice Hill

      Give it a try…you never know!

      Reply

  12. Jacque Hastert

    This elegant dinner is perfect for date nights at home! I can’t believe that it is easy enough to make at home.

    Reply

    1. Bernice Hill

      You betcha!! It’s too easy almost.

      Reply

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