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You are here: Home / Recipes / Main Dishes / Lamb / Leg of Lamb with Mashed Potatoes

Leg of Lamb with Mashed Potatoes

December 23, 2018 by Mahy, Updated November 20, 2020 17 Comments

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Long Pin Leg of Lamb with Mashed Potatoes

If comfort food could speak, it would tell you to make this Leg of Lamb with Mashed Potatoes! It’s pure comfort love! Plus it’s a show stopper at your Holiday Dinner table or any dinner table!

A table with four plates and drinks and a main dish of leg of lamb with mashed potatoes in the middle surrounded by pomegranates and greens

This luscious recipe and video is sponsored by my friends at American Lamb. All opinions are mine alone.

I know so many people that are intimidated to cook a nice leg of lamb like that 🙂 Probably because it’s a nice pricey cut and they don’t wanna mess it up, which makes sense.

So today I’m breaking this down and sharing the juice on making your leg of lamb super juicy,  and ever so delicious!! You’ll find a full recipe video below and my go-to tips for succulent roast leg of lamb.

Plus you can find a full recipe video along with tips on the best Instant Pot Mashed Potatoes recipe ever.

And finally, I have to say that  the combo of lamb and mashed potatoes is pure heaven! By all means, pair them together and now all you need is just a nice big bowl of salad 🙂

Close up of a plate showing the whole leg of lamb over mashed potatoes on a big plate , topped with parsley and pomegranate

LEG OF LAMB RECIPE

First of all, it starts with quality lamb. I use only American lamb for all my lamb recipes. And because I’ve tasted so many different types of lamb and visited a few local farms, I assure you, American lamb is unlike any other!

It’s raised with love and to the highest standard possible, so you can certainly expect the freshest and tastiest lamb ever.

I secretly cut slits in my leg of lamb and stuff them with a whole clove of garlic. I learned this tip from my grandma, and it adds so much flavor to your lamb. As the lamb roasts, the garlic flavor infuses the meat like no marinade could.

My leg of lamb is trimmed but I still keep a few pieces of fat here and there for flavor. While this is optional, I strongly recommend you keep a bit of fat in your lamb 🙂

 

 

 

 

The marinade is so flavorful and balanced. There’s a balance of strong spice, and sweet honey mustard and ketchup. Your leg of lamb wont taste like ketchup for sure! But it certainly will have a nice faint sweetness from it 🙂

Roasting the leg of lamb to rare, medium, well or fall off the bone tender is completely adjustable in the oven. Today, I’ve chosen a fall off the bone tender piece of lamb.

The lamb will create some tasty juices at the bottom of the pan which are perfect for drizzling on top while serving. Likewise, you can turn that sauce in to a gravy if you prefer, but it’s quite perfect as is!

Covering the lamb with parchment paper and then foil, keeps the lamb super juicy. Also, if you’re roasting it for a while to the fall off the bone tender, it will still have a nice crust. However if you’re only roasting it for a bit, then you’ll need to uncover and broil the tops for a few minutes.

A few cups with drinks on a table and a few winter greens and fruits surrounding a big plate of a whole leg of lamb recipe served with mashed potatoes under.

HOW TO ROAST A LEG OF LAMB

Start by picking up some local fresh American Lamb and keep some of the fat on.

Use a knife to randomly cut slits in your leg of lamb and stuff them with peeled whole garlic cloves. You can add herbs too!

Make your marinade and slather it over the lamb well. Make sure every bit of lamb is well covered with the marinade and then wrap it up in parchment paper and foil.

Marinate your lamb for anytime between 3-12 hours. I find that 3 hours is good enough 🙂

Roast your leg of lamb at 375 degrees for anywhere between 1.5 hours and up to 5 hours—depending on how well you prefer your lamb and on how big your leg of lamb is.

This recipe here is a 10 pound piece and I roasted it for the full 5 hours till super tender.

Serve the lamb right away! I love a sprinkle of parsley, pomegranate arils and pine nuts. Yes. As unusual as it may sound, toasted pine nuts and lamb combined are another match made in heaven!

Fall off the bone tender leg of lamb recipe up close showing the bone and the mashed potatoes underneath

LEG OF LAMB TIPS

  • Always always always pick American lamb for BEST taste and quality.
  • Trim the lamb but keep some fat, at least 15%.
  • Infuse the meat with the whole garlic cloves slits and add in whole spice such as cardamom, or herbs if you like.
  • Always use a balanced marinade, and don’t be shy with spice. Lamb has so much flavor and it can take up so much more. Never keep lamb bland! 🙂
  • Wrapping the lamb helps keep the juices in and concentrates the flavor of roasting, plus it creates a sauce for drizzling once it’s done. The sauce is like Gold!
  • Roasting time is anywhere between 1.5 hours and unto 5 hours. It may sound like a lot, but roasting a leg of lamb till it’s tender and fall of the bone is one of life’s greatest pleasures! Try it and then experiment with other levels of done-ness.
  • Make ahead: This leg of lamb is great to make ahead and then simply wrap it in a foodsaver in your freezer with the juices wrapped separately. You can freeze it for up to 3 months and simply reheat it at 375 for an extra hour, covered.
  • Or, you can marinade the lamb overnight and start roasting the day you’ll be serving it. The oven does all the work, so you can finish off the rest of your dinner prep.
  • Finally, the best tip I can give is: You Can Do This!! I promise 🙂

The main dish of a whole leg of lamb roasted over mashed potatoes on a serving table

LAMB RECIPES

-Looking for more Lamb Love, specially now for the Holidays: Try this Pomegranate Roast Lamb Shanks, The Ultimate Lamb Kabab Platter, Moroccan Lamb and Turmeric Lentil Soup, Or the Fall Harvest Bowl with Lamb Meatballs recipe. Cheese Fondue with Lamb Dippers is the perfect party food!

I know we always have lamb for the Holidays and even New Year’s eve, but I’m ecstatic to see more and more families now jumping in to trying lamb for the Holidays too!! Once you try it, you’ll be hooked!

So give this leg of lamb a try, even if it’s pricey and looks like a huge piece of meat to handle. You can do it, and it’s so very worth it! Don’t forget to tag me so I can check out your beautiful lamb creations! 🙂

Happiest Holidays Friends! Wishing you an awesome 2019!

Fall off the bone tender leg of lamb recipe up close showing the bone and the mashed potatoes underneath
4.89 from 9 votes
Print

Leg of Lamb with Mashed Potatoes

If comfort food could speak, it would tell you to make this Leg of Lamb with Mashed Potatoes! It’s pure comfort love! Plus it’s a show stopper at your Holiday Dinner table or any dinner table!
Course holidays, Main Course, Main Dish
Cuisine American, Mediterranean
Keyword Lamb recipes, Leg of Lamb, Leg of Lamb recipe, Roast Leg of lamb
Prep Time 3 hours
Cook Time 4 hours
Resting Time 20 minutes
Total Time 7 hours
Servings 10 people
Calories 53 kcal
Author Mahy

Ingredients

  • 10 pound lamb whole leg, trimmed with about 20% fat on
  • 1 head garlic peeled and left whole
  • 3 Tablespoons Salt I use Pink Himalayan
  • 3 Tablespoons Black Pepper
  • 1 Tablespoon Allspice
  • 1 tablespoon Garam Masala Spice
  • 2 Tablespoons Oregano
  • 1 Tablespoon Chili Powder
  • 1 Tablespoon Onion Powder
  • 1 tablespoon Garlic Powder
  • 1/4 cup Honey Mustard
  • 1/3 cup Ketchup
  • 1/4 cup Vinegar any type

Sprinkle:

  • 1/4 cup toasted pine nuts
  • 1/3 cup pomegranate arils
  • 3 tablespoons Parsley leaves chopped

Instructions

  1. Layer a Large roasting pan with foil and parchment paper. Place the leg of lamb over the parchment paper and use a small knife to cut tiny slits randomly along the lamb. About 12 slits total front and back are good enough.
  2. Press a whole clove of garlic in to each of the slits. You can add herbs or whole spice with the garlic if you prefer.
  3. In a large bowl, add the remaining ingredients together and mix well.
  4. Slather the leg of lamb with the marinade top and bottom and between the bones, everywhere.
  5. Wrap your leg of lamb with the parchment paper and then foil and let the lamb marinade for 3-12 hours.
  6. Preheat the oven to 375 degrees F and place the roasting pan with the leg of lamb wrapped up for 1.5-5 hours depending on how well you prefer the lamb to be.
  7. Remove the lamb from the oven and let it sit for 15 minutes, then unwrap it and carefully strain the juices at the bottom of the parchment paper.
  8. Serve the lamb drizzled with the juices and sprinkled with parsley, pomegranate arils and toasted pine nuts.
  9. Enjoy!

Recipe Video

Recipe Notes

-Always always always pick American lamb for BEST taste and quality. -Trim the lamb but keep some fat, at least 15%. -Infuse the meat with the whole garlic cloves slits and add in whole spice such as cardamom, or herbs if you like. -Always use a balanced marinade, and don’t be shy with spice. Lamb has so much flavor and it can take up so much more. Never keep lamb bland! 🙂 -Wrapping the lamb helps keep the juices in and concentrates the flavor of roasting, plus it creates a sauce for drizzling once it’s done. The sauce is like Gold! -Roasting time is anywhere between 1.5 hours and unto 5 hours. It may sound like a lot, but roasting a leg of lamb till it’s tender and fall of the bone is one of life’s greatest pleasures! Try it and then experiment with other levels of done-ness. -Make ahead: This leg of lamb is great to make ahead and then simply wrap it in a foodsaver in your freezer with the juices wrapped separately. You can freeze it for up to 3 months and simply reheat it at 375 for an extra hour, covered. -Or, you can marinade the lamb overnight and start roasting the day you’ll be serving it. The oven does all the work, so you can finis off the rest of your dinner prep. -Finally, the best tip I can give is: You Can Do This!! I promise 🙂

Nutrition Facts
Leg of Lamb with Mashed Potatoes
Amount Per Serving
Calories 53 Calories from Fat 18
% Daily Value*
Fat 2g3%
Sodium 88mg4%
Potassium 133mg4%
Carbohydrates 7g2%
Fiber 1g4%
Sugar 2g2%
Protein 1g2%
Vitamin A 305IU6%
Vitamin C 1.3mg2%
Calcium 35mg4%
Iron 1mg6%
* Percent Daily Values are based on a 2000 calorie diet.

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Filed Under: Lamb, Recipes, Videos Tagged With: how to cook lamb, lamb recipe, lamb recipes, leg of lamb, leg of lamb marinade, leg of lamb recipe, recipe video

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Reader Interactions

Comments

  1. Krista

    January 2, 2019 at 1:02 pm

    5 stars
    Oh my gosh! This looks so good! I want this for dinner asap!

    Reply
    • Mahy

      January 14, 2019 at 12:07 pm

      Hope you do!!

      Reply
  2. Melanie | Melanie Makes

    January 1, 2019 at 10:36 pm

    Talk about comfort food!

    Reply
    • Mahy

      January 14, 2019 at 12:08 pm

      PURE Comfort Love!

      Reply
  3. alyssa | everydaymaven

    January 1, 2019 at 9:21 pm

    What a fantastic dinner!

    Reply
    • Mahy

      January 14, 2019 at 12:08 pm

      Thanks Alyssa!

      Reply
  4. Sara

    December 31, 2018 at 1:40 pm

    5 stars
    Love your presentation! Looks scrumptious and makes a lovely meal for a nice dinner!

    Reply
    • Mahy

      January 14, 2019 at 12:10 pm

      Thanks

      Reply
  5. Sabrina

    December 31, 2018 at 12:47 pm

    5 stars
    This is pure comfort food at it’s best! Lamb is such a great way to change up our normal dinner routine.

    Reply
    • Mahy

      January 14, 2019 at 12:10 pm

      Lamb is like a treat for dinner!

      Reply
  6. Demeter

    December 31, 2018 at 12:46 pm

    5 stars
    This looks amazing! Such a good idea to stuff the lamb with garlic….Grandma was a genius!

    Reply
    • Mahy

      January 14, 2019 at 12:10 pm

      hahahaha Demeter thanks!

      Reply
  7. Jyothi(Jo)

    December 27, 2018 at 10:47 am

    5 stars
    Leg of lamb is one dish I often order when we eat out and it’s simply the best when paired with mashed potatoes. Got to try this recipe, thanks for sharing the recipe

    Reply
    • Mahy

      January 17, 2019 at 12:23 pm

      Thanks Jyothi!

      Reply
  8. Marisa Franca

    December 24, 2018 at 6:03 am

    5 stars
    We love lamb and we do eat it throughout the year. We even grill it — the taste is marvelous and it is tender. I like the seasoning you used on the lamb – I bet the flavor was marvelous.

    Reply
  9. Cheese Curd In Paradise

    December 23, 2018 at 6:53 pm

    5 stars
    My family loves lamb and I love all the seasoning in this recipe I also love the sprinkling on top with the seasonal flavors!

    Reply
  10. Danielle Wolter

    December 23, 2018 at 10:59 am

    5 stars
    I am just drooling over this recipe. What amazing flavors. I love a good roasted leg of lamb. My mom used to put garlic in slits on the lamb too 🙂 Great recipe!

    Reply
4.89 from 9 votes (1 rating without comment)

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Mahy PicHi, I'm Mahy, a recipe developer, food stylist, culinary instructor, photographer, wife and busy mom! Welcome to my blog!...Read More

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