Roasted Leg Lamb Mint

Roasted Leg of Lamb with Mint Jelly glistening on a platter, herb-crusted and juicy, with mint jelly dollop beside it. Save to Pinterest
Roasted Leg of Lamb with Mint Jelly glistening on a platter, herb-crusted and juicy, with mint jelly dollop beside it. | cookingwithalana.com

This dish features a bone-in leg of lamb expertly slow-roasted with garlic, fresh rosemary, thyme, and lemon zest to create a fragrant crust. Roasted alongside hearty vegetables like carrots, onions, and celery, the meat remains juicy and flavorful. After resting, it’s served with a vibrant mint jelly that adds a refreshing contrast. For enhanced taste, try deglazing the roasting pan with red wine to drizzle on top. Pair with roasted potatoes or seasonal veggies for a satisfying meal.

The smell of rosemary and garlic hitting that hot fat is something that stops conversation in my kitchen every single time. My grandmother used to make leg of lamb for Easter Sunday, and I swear half the neighborhood would drift through the back door just as it was coming out of the oven.

Last Easter, my brother-in-law who swears he hates mint tried to skip the jelly entirely. One hesitant spoonful later and he was dragging his lamb through twice as much as anyone else. Sometimes the classics stick around for a reason.

Ingredients

  • Leg of lamb: Bone-in gives you better flavor and acts as a built-in roasting rack
  • Garlic slices: Tucking these into little incisions means flavor in every single bite
  • Fresh rosemary and thyme: Dried herbs work in a pinch, but fresh is what makes that house-filling aroma
  • Lemon zest: Brightens up all that rich meat flavor
  • Root vegetables: They catch all those precious drippings and become the best part of the meal

Instructions

Prep your lamb:
Pat that leg completely dry with paper towels, then use a sharp knife to make small slits all over. Tuck a garlic slice into each one, like youre hiding little flavor bombs.
Make the herb paste:
Mix your rosemary, thyme, lemon zest, salt, pepper, and olive oil until it becomes a fragrant paste. Rub it all over that lamb like youre giving it a spa treatment.
Set up your roasting pan:
Toss your carrots, onions, and celery into the pan, then nestle the lamb on top fat side up. These veggies are going to cook in all those juices.
The initial sear:
Roast at 200°C for 20 minutes to get that gorgeous crust going, then drop the temperature to 180°C for the long slow cook.
Cook to perfection:
Roast for about 1 hour 25 minutes until you hit 57°C internal temperature. Trust the thermometer more than the clock.
The rest is mandatory:
Tent that beautiful leg with foil and let it rest for at least 15 minutes. This is what keeps all those juices where they belong inside the meat.
A tender Roasted Leg of Lamb with Mint Jelly sits sliced, rosemary and garlic visible, served with green mint jelly. Save to Pinterest
A tender Roasted Leg of Lamb with Mint Jelly sits sliced, rosemary and garlic visible, served with green mint jelly. | cookingwithalana.com

My dad always carves the lamb at the table, partly for show and partly because he claims it tastes better when everyone is watching. The first slice, all steamy and pink, gets eaten standing up every single time.

Making The Perfect Mint Jelly

Store-bought works perfectly fine, but homemade jelly is shockingly simple. Fresh mint, sugar, vinegar and apple juice simmered down until thick makes the kitchen smell like a garden.

Carving Like A Pro

Let your knife do the work rather than sawing through the meat. Slice against the grain into thin, elegant pieces and try to include some of that herb crust on each serving.

Leftovers That Transform

Cold lamb the next morning on good bread with mustard is a secret breakfast champion. The flavors develop overnight and honestly, I plan for extra just for this reason.

  • Lamb sandwiches with arugula and horseradish cream
  • Shepherds pie that beats any restaurant version
  • Warming the leftovers gently in the leftover juices
Golden Roasted Leg of Lamb with Mint Jelly rests on wooden board, flanked by roasted carrots and onions, ready to serve. Save to Pinterest
Golden Roasted Leg of Lamb with Mint Jelly rests on wooden board, flanked by roasted carrots and onions, ready to serve. | cookingwithalana.com

Theres something almost ceremonial about a leg of lamb on the table. It turns dinner into an occasion before anyone even takes a bite.

Recipe Questions & Answers

Slow-roasting at a moderate temperature and letting the lamb rest after cooking helps retain its juices, resulting in tender meat.

Rosemary, thyme, and lemon zest work harmoniously to enhance the natural flavors without overpowering.

Yes, by simmering fresh mint with sugar, vinegar, and apple juice, you can create a bright, homemade mint jelly.

Carrots, onions, and celery add aroma and sweetness that complement the savory lamb during roasting.

Use a meat thermometer to reach an internal temperature of 57°C (135°F) for medium-rare before resting.

Roasted Leg Lamb Mint

Tender slow-roasted leg of lamb accented with garlic, rosemary, and thyme, paired with fresh mint jelly.

Prep 20m
Cook 105m
Total 125m
Servings 6
Difficulty Medium

Ingredients

Lamb and Rub

  • 1 (4.5–5.5 lb) bone-in leg of lamb, trimmed
  • 2 teaspoons kosher salt
  • 1 teaspoon freshly ground black pepper
  • 4 garlic cloves, sliced
  • 2 tablespoons fresh rosemary, chopped
  • 2 tablespoons fresh thyme leaves
  • 3 tablespoons olive oil
  • Zest of 1 lemon

Roasting Vegetables

  • 2 large carrots, cut into chunks
  • 2 onions, quartered
  • 2 celery stalks, cut into chunks

Serving

  • 1 cup prepared mint jelly (store-bought or homemade)

Instructions

1
Preheat Oven: Preheat oven to 400°F. Place a rack in the lower third of the oven.
2
Prepare the Lamb: Pat the lamb dry. Using a sharp knife, make small incisions all over the lamb. Insert garlic slices into the slits.
3
Make Herb Rub: In a small bowl, mix rosemary, thyme, lemon zest, salt, pepper, and olive oil. Rub this mixture thoroughly over the lamb.
4
Arrange for Roasting: Arrange carrots, onions, and celery in a large roasting pan. Place the lamb on top, fat side up.
5
Initial High-Heat Roast: Roast for 20 minutes at 400°F.
6
Finish Roasting: Reduce oven temperature to 350°F and continue roasting for 1 hour 25 minutes for medium-rare, or until internal temperature reaches 135°F.
7
Rest and Carve: Transfer the lamb to a platter, tent loosely with foil, and let rest for 15–20 minutes before carving.
8
Serve: Serve slices of lamb with mint jelly on the side.
Additional Information

Equipment Needed

  • Roasting pan
  • Meat thermometer
  • Sharp carving knife
  • Cutting board
  • Small mixing bowl

Nutrition (Per Serving)

Calories 480
Protein 42g
Carbs 14g
Fat 28g

Allergy Information

  • Contains no common allergens. If using store-bought mint jelly, check labels for potential gluten or additives.
Alana Brooks