Roast Leg Of Lamb

Ingredients

• 2.27 kg (5 lb)bone-in leg of lamb, trimmed
• 6 clovesgarlic, minced
• 15 ml (1 tablespoon)olive oil
• 15 ml (2 tablespoons)fresh rosemary, chopped
• 15 ml (1 tablespoon)fresh thyme, chopped
• 15 ml (1 tablespoon)salt
• 2.5 ml (1/2 teaspoon)black pepper

Instructions

1. 1

   Preheat the oven

   Heat the oven to 177°C (350°F). Lightly oil a roasting pan.

2. 2

   Prepare the lamb

   Pat the lamb dry with paper towels. Score the fat with shallow cuts made using the tip of a sharp knife.

3. 3

   Mix the seasoning

   Stir together the garlic, olive oil, rosemary, thyme, salt and pepper.

4. 4

   Season the joint

   Set the lamb in the middle of the prepared roasting pan and rub the garlic mixture all over it. Arrange it fat side up.

5. 5

   Roast the lamb

   Roast for 1 hour 30 minutes to 1 hour 45 minutes, or until the centre reaches 54°C (130°F).

6. 6

   Rest before carving

   Transfer the lamb to a cutting board and leave it to rest for 15 to 25 minutes. Its internal temperature will rise to about 60°C (140°F) for medium-rare.

What is roast leg of lamb?

Roast leg of lamb is a classic centrepiece: a whole leg is seasoned and roasted, then carved to serve. Roasting lamb has a long tradition in many cuisines, and this American-style version keeps the seasoning simple.

Garlic, rosemary and thyme make a fragrant coating, while roasting the joint fat side up helps the surface brown as the meat cooks.

Nutrition and macros by portion

The nutrition label shows one serving as written: 249 calories, 37g protein, 1g carbs, 10g fat.

Most of the protein comes from the lamb, while the meat and olive oil contribute most of the fat. The small amount of carbohydrate comes mainly from the garlic and herbs. Serve it with vegetables and a moderate portion of potatoes to make a balanced plate.

Choosing the lamb

Bone-in joint: The recipe uses a trimmed, bone-in leg weighing 2.27 kg. The bone remains in place during roasting, so use the stated internal temperature rather than relying on time alone.

Fat cap: Score the fat with shallow cuts, taking care not to cut deeply into the meat. This gives the seasoning more surface to cling to.

Making the garlic rub

Fresh herbs: Chopped rosemary and thyme are mixed with minced garlic, oil, salt and pepper. Combining them first makes it easier to spread the seasoning evenly over the joint.

Even coating: Rub the mixture across the lamb, including around the scored surface. Set the joint fat side up in the pan before it goes into the oven.

Roasting to medium-rare

Oven heat: Roast at 177°C (350°F) for 1 hour 30 minutes to 1 hour 45 minutes. The cooking time is a guide; the recipe's doneness cue is an internal temperature of 54°C (130°F).

Temperature check: Take the reading in the thickest part of the meat, avoiding the bone. After resting, the temperature is expected to rise to about 60°C (140°F) for medium-rare.

Why resting matters

Resting time: Move the lamb to a cutting board and leave it for 15 to 25 minutes before carving. This also gives the temperature time to rise as described in the method.

Carving: Use a sharp knife and cut slices across the meat. Keep the joint steady on the board while carving.

What to serve alongside

Classic sides: Serve with roast potatoes and vegetables such as carrots, parsnips or green beans. Their mild flavours complement the savoury herb coating.

For balance: Add a generous portion of vegetables and, if you like, a fresh salad. A sharp mint or herb sauce can provide a bright contrast to the rich lamb.

Recipe notes & tips

• Dry the lamb well before scoring so the seasoning adheres to the surface.
• Keep the cuts in the fat shallow rather than slicing into the meat.
• Rub the garlic and herb mixture over the whole joint for an even coating.
• Use an oven-safe meat thermometer to check the centre of the joint.
• Allow the full 15 to 25 minutes of resting time before carving.

Variations

• Herb change: Swap some of the rosemary for extra thyme while keeping the same simple rub.
• Citrus note: Add finely grated lemon zest to the garlic and herbs for a fresher flavour.
• More garlic: Increase the minced garlic if you prefer a more pronounced garlic coating.
• Peppery crust: Add a little more black pepper to the seasoning mixture.
• Pan gravy: Use the roasting pan juices as a base for gravy to serve alongside the lamb.

Common mistakes to avoid

• Deep scoring: Cutting into the meat can let juices escape; keep the cuts shallow and limited to the fat.
• Uneven seasoning: Rubbing only the top leaves parts of the joint unseasoned; coat it all over.
• Guessing doneness: Roast time can vary; check the thickest part with a thermometer and avoid touching the bone.
• Skipping the rest: Carving straight away misses the recipe's resting stage; wait 15 to 25 minutes.
• Carving too thickly: Thick slices can be harder to serve neatly; use a sharp knife and cut across the meat.

How to store

Refrigerate leftover lamb in a covered container within 2 hours of cooking and use within 3 to 4 days. Reheat slices gently until hot throughout, or enjoy them cold in sandwiches or salads.

Frequently asked questions