Roast Lamb

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Make this Lamb Roast the star of your holiday table! Juicy, tender and succulent, this recipe for roast boneless leg of lamb turns out perfect every time. Start a new tradition and serve roast lamb instead of turkey this year. Suitable for gluten free, low carb, and paleo diets. Post includes Weight Watchers points.

Delighted to have teamed up with Try Lamb to bring you this recipe. Although it is a sponsored partnership, all opinions are my own.

lamb roast with vegetables and gravy

Looking to do things a little differently this holiday season? Serve this delectable leg of lamb roast for Thanksgiving this year and start a whole new holiday tradition.

I know what you’re thinking….lamb instead of turkey? On Thanksgiving?!?!?

Friends, just hear me out. With only a handful of basic pantry ingredients and almost no effort at all, you will have a boneless lamb roast that is incredibly tender, so juicy, and full of seasonal flavour. Never have to fret about dry or tasteless.

And it’s ready in waaaay less time than it takes to cook a whole turkey. Yeap. We’re talking less than 2 hours versus an all-day cooking affair.

But if you’re just not ready to replace that Thanksgiving bird, that’s okay. The festive flavours of this lamb roast recipe make it the ideal main dish for your Christmas dinner.

roast lamb recipe on a plate with garnish

Why You’ll Love Lamb Roast

  • It’s SO easy! All it takes is a handful of ingredients and less than 2 hours in the oven to turn out this restaurant-quality main dish.
  • Leg of lamb roast is sophisticated yet affordable. Feeding the entire extended family and your friends won’t break the bank when you serve boneless lamb.
  • Not only does it taste amazing, lamb is a great source of important nutrients such as vitamin B12, niacin, zinc and potassium.

So, are you ready to learn how to cook lamb that is deliciously moist, juicy and tender? Gather up those ingredients and I will show you…..

How To Cook Lamb Roast

  1. Preheat the oven to 220 C / 425 F / gas mark 7.
  2. In a small bowl, combine oil, orange juice, garlic, thyme, allspice, salt and pepper and mix into a paste.
  3. Place the lamb on a baking tray and rub with the paste, making sure all sides are thoroughly coated.
  4. Roast in preheated oven for 20 mins.
  5. Turn the temperature down to 160 C / 320 F, and continue to bake for an additional 16 mins per 500g (for medium), or 20 mins per 500g for lamb that is well done.
  6. Remove the roast boneless leg of lamb from oven and let it rest for a full 20 mins before slicing.
  7. Serve and enjoy!

Boneless Lamb Roast Tips

  • Feel free to customize the seasonings to suit your taste. Rosemary or oregano are great choices.
  • If you prefer, you can swap the orange juice for apple cider or pomegranate juice.
  • Make sure you allow the lamb time to fully rest before carving.

Roast Lamb Serving Suggestions

Pair this roast boneless leg of lamb with any (or all!) of the following sides:

Roast Lamb Weight Watchers Points

There are 3 Freestyle SmartPoints in one serving of roast lamb.

Juicy lamb roast with roasted vegetables and gravy

Get The Roast Lamb Recipe:

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lamb roast with vegetables and gravy
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5 from 6 votes

Lamb Roast

Create a new holiday tradition with this recipe for boneless lamb roast!
Prep Time10 minutes
Cook Time1 hour 8 minutes
Course: Dinner, Main Course
Cuisine: American, British, Western
Servings: 8
Calories: 170kcal
Author: Bintu Hardy

Ingredients

Lamb Roast Ingredients

  • 1.5 kg (3.3 lbs) boneless leg of lamb
  • 1 tbsp olive oil
  • 1 tbsp orange juice
  • 1 tsp minced garlic
  • 1 tbsp thyme freshly chopped
  • 1-2 tsp ground allspice to taste
  • Salt to taste
  • Black pepper to taste

Instructions

Lamb Roast Instructions

  • Preheat the oven to 220 C / 425 F / gas 7.
  • In a small bowl, combine oil, orange juice, garlic, thyme, all spice, salt and pepper and mix into a paste.
  • Place the lamb on a baking tray and rub with the paste, making sure all sides are thoroughly coated.
  • Roast in preheated oven for 20 mins at 200 C.
  • Turn down the temperature to 160 C / 320 F and bake for an
  • additional 16 mins per 500g (1.1 lbs) for medium or 20 mins per 500g for lamb that is well done.
  • Remove lamb from oven and let it rest for a full 20 mins before slicing.
  • Serve and enjoy!
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Notes

Leg of Lamb Roast Tips

  • Feel free to customize the seasonings to suit your taste. Rosemary or oregano are great choices.
  • If you prefer, you can swap the orange juice for apple cider or pomegranate juice.
  • Make sure you allow the lamb time to fully rest before carving.

Lamb Roast Serving Suggestions

Boneless Lamb Roast Weight Watchers Points

There are 3 Freestyle SmartPoints in one serving of this roast lamb recipe.

Nutrition

Calories: 170kcal | Carbohydrates: 1g | Protein: 24g | Fat: 7g | Saturated Fat: 2g | Cholesterol: 76mg | Sodium: 74mg | Potassium: 347mg | Fiber: 1g | Sugar: 1g | Vitamin A: 42IU | Vitamin C: 3mg | Calcium: 12mg | Iron: 2mg

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6 Comments

  1. 5 stars
    Thanks for the step by step recipe — I just sent this to my best friend who’s planning to make a lamb roast this weekend!

  2. 5 stars
    This lamb looks absolutely delicious! We are considering lamb for our festive meal.