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This stunning roast leg of lamb is coated in a bold honey Dijon garlic rub and roasted until tender with a crisp blackened crust. A show-stopping centerpiece for Easter or special occasions!
For the Lamb:
1 (5 lb) bone-in leg of lamb
2 cloves garlic, smashed and thinly sliced (for inserting into lamb)
Honey Dijon Garlic Rub:
10 cloves garlic
1 tablespoon dried oregano
1 tablespoon dried thyme
1 teaspoon dried rosemary
1 1/2 tablespoons kosher salt
2 teaspoons black pepper
1/4 cup honey Dijon mustard
1 tablespoon olive oil
For the Roasting Pan:
4 cloves garlic, smashed
2 medium red onions, thinly sliced
10–11 whole carrots, peeled
2 tablespoons olive oil
2 teaspoons kosher salt
1/2 teaspoon black pepper
For the Onion Gravy:
1/4 cup flour
2 tablespoons honey Dijon mustard
1/2 cup white cooking wine (or chicken broth)
3 cups chicken broth
Salt and pepper, to taste
Prep the lamb: Let lamb rest at room temp. Slice garlic and insert into small cuts all over the lamb.
Make the rub: Blend garlic, oregano, thyme, rosemary, salt, pepper, mustard, and olive oil into a paste. Rub over the entire lamb.
Prepare roasting pan: Layer onions, carrots, and garlic in the pan. Toss with olive oil, salt, and pepper.
Place lamb on a roasting rack over the vegetables. Let sit with rub for 15–60 minutes.
Preheat oven to 500°F (260°C). Place lamb in the oven for 10 minutes.
Without opening the door, reduce oven to 400°F (204°C). Roast for an additional 1 hr 10–25 mins until desired internal temperature (see Notes).
Remove lamb and rest for 20 minutes, tented with foil.
Make the gravy: Use pan drippings and onion mixture. Whisk in flour, then mustard, wine, and broth gradually. Simmer until thickened.
Slice lamb: Follow bone contours for clean slices. Serve with roasted carrots and onion gravy.
Onion Choice: Red onions add subtle sweetness, but white or yellow onions work too.
Temperature Guide:
Rare: 115–120°F
Medium-Rare: 120–125°F
Medium: 130–135°F
Medium-Well: 140–145°F
Well-Done: 150–155°F
Resting is Key: Always rest meat before carving to retain juices.
Gravy Tip: Add 2 tbsp butter at the end for a richer sauce.