Roasted Boneless Leg of Lamb with Vegetables: The Ultimate Holiday Meal

This roasted boneless leg of lamb with vegetables is not only delicious but also incredibly easy to prepare. It is ideal for the holiday season when you want a show-stopping meal without spending all day in the kitchen. It is also great if you are feeding a large family or group. The best part is that it’s more affordable than the pricier rack of lamb. The combination of garlic, lemon, and fresh herbs makes every bite taste like you’re dining at a fancy restaurant. Whether it’s for a festive gathering or a cozy family dinner, this recipe is a crowd-pleaser that will leave everyone asking for seconds!

The preparation method for this dish is as simple as it is effective. I started by preheating the oven and seasoned the boneless leg of lamb generously with salt and pepper. Then I made a mixture of olive oil, garlic, lemon, and fresh herbs. I rubbed the meat with the olive oil mixture. I used some kitchen twine to make sure it keeps its shape. Then I sliced some vegetables and I placed them on the bottom of a deep sheet pan. Next, I placed the lamb on a rack set on top of the vegetables, allowing the juices to drip down as the lamb roasted. The result is a perfectly roasted leg of lamb with a crispy exterior. This meal is simply irresistible paired with vegetables that are infused with all the lamb’s delicious drippings.

Ingredients:

Boneless leg of lamb: A tender and juicy cut of meat, perfect for roasting.
Olive oil: A rich, flavorful fat that helps to create a beautiful golden crust on the lamb.
Lemon zest and juice: The zest adds a fresh, aromatic fragrance. The juice provides a bright, tangy contrast to the richness of the lamb.
Garlic: infuses the lamb with depth and pairs wonderfully with the fresh herbs.
Fresh herbs (rosemary and thyme): These herbs add an earthy, fragrant note to the lamb.
Salt and pepper: Essential for seasoning, salt enhances all the flavors, while freshly cracked black pepper adds a subtle kick.
Potatoes: Roasted to perfection, they become crispy on the outside and soft on the inside. Also, they are the perfect vegetable for soaking up the lamb’s drippings.
Carrots: after roasting they become sweet and slightly caramelized. The carrots provide a wonderful balance to the savory lamb and absorb all the juicy flavors.
Leeks: Mild and slightly sweet. They add depth to the vegetable mix, becoming tender and flavorful as they cook with the lamb.

Temperature and Roasting Time:

Roasting a boneless leg of lamb is relatively straightforward. The key to a perfect roast is both the oven temperature and the internal temperature of the meat. Here’s a guide to help you roast your boneless leg of lamb:

Preheat the oven to 375°F (190°C).
Roasting time depends on the size of your lamb and how well-done you want it. Here are approximate cooking times:
- Rare (120–125°F / 49–52°C): 20 minutes per pound
- Medium-rare (130–135°F / 54–57°C): 25 minutes per pound
- Medium (140–145°F / 60–63°C): 30 minutes per pound
- Well-done (150°F / 66°C and above): 35 minutes per pound

Please Note:

After removing the lamb from the oven, its internal temperature will continue to rise by about 5–10°F as it rests.

Internal Temperature:

Use a meat thermometer to check the internal temperature of the lamb. Here’s the recommended target temperature:

Rare: 120–125°F (49–52°C)
Medium-rare: 130–135°F (54–57°C)
Medium: 140–145°F (60–63°C)
Well-done: 150°F (66°C) and above

Roasting Instructions:

Prepare the lamb: Rub the lamb with olive oil, salt, pepper, and your choice of herbs/spices (garlic, rosemary, thyme).
Roast: Place the lamb on a rack in a roasting pan to allow air to circulate around the meat. This will ensure even cooking. Optionally, you can also roast with some vegetables (like carrots, onions, and potatoes) in the pan.
Rest: After removing the lamb from the oven, let it rest for about 15-20 minutes before slicing. This allows the juices to redistribute and ensures the meat stays tender and moist.

Serving Instructions:

Once the lamb has finished roasting, let it rest for about 10-15 minutes before carving. This allows the juices to redistribute and ensures a tender, flavorful roast.
Slice the lamb against the grain for the best texture. Serve the slices on a platter, alongside the roasted vegetables.
For a complete meal, garnish with additional fresh herbs like rosemary or thyme. You can also drizzle any pan juices over the lamb and vegetables.
This dish pairs wonderfully with a simple side salad or some crusty bread.

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Storing Instructions

Refrigerating – If you have leftovers, allow the lamb and vegetables to cool to room temperature before storing them in an airtight container. They will keep in the refrigerator for up to 4 days.
Freezing – For longer storage, you can freeze the leftover lamb. Wrap it tightly in plastic wrap or foil, then place it in a freezer-safe bag or container. It will stay fresh in the freezer for up to 3 months. Vegetables can also be frozen, though they may lose some texture once reheated.
Reheating – To reheat, place the lamb and vegetables in a preheated oven at 325°F (163°C) for about 15-20 minutes. Alternatively, you can microwave individual portions for a quicker option.

Enjoy your leftovers in sandwiches, wraps, or on top of a salad!

Print Recipe

Roasted Boneless Leg of Lamb with Vegetables

Prep Time30

Cook Time1 30

Total Time2

Course: Dinner, Main Course

Cuisine: Mediterranean

Keyword: Christmas, Dairy free, Easter, gluten free

Servings: 8

Equipment

Deep sheet pan mine was 17.9"L x 13"W x 2"H
Oven safe wire rack that will fit your pan
Food thermometer

Ingredients

1 boneless leg of lamb mine was 4.5 lbs
2 Tbsp olive oil
1 Tbsp freshly squeezed lemon juice
the zest from one lemon
8 garlic cloves finely chopped or pressed
2 Tbsp chopped fresh rosemary
2 Tbsp chopped fresh thyme
salt and pepper to taste

Vegetables

2 large russet potatoes washed, peeled and cut to thick rounds
1 leek stalk washed well, cut to thick rounds
1 lb baby carrots or regular carrots cut to thick rounds

Instructions

Prepare the leg of lamb:

Remove the leg of lamb from the fridge an hour before cooking.
Preheat the oven to 375 F.
Remove the package and the net. Then pat dry the lamb leg with a paper towel.
In a small bowl, combine 2 Tbsp olive oil, 1 Tbsp freshly squeezed lemon juice, and the zest of 1 lemon.
Add 8 garlic cloves (finely chopped or pressed), 2 Tbsp chopped fresh rosemary, 2 Tbsp chopped fresh thyme salt and pepper to the same bowl. Then stir well.

Season the leg of lamb

Unfold the leg of lamb and place it fat side up. Score the fatty layer with a sharp knife. This will help the flavors penetrate the meat better.
Season the meat generously with salt and pepper on each side. Then rub the olive oil and herb mixture. make sure that the mixture is evenly distributed.

Prepare the vegetables

Wash and peel 2 large russet potatoes. Cut them into thick rounds (about 1/2-inch thick).
Wash and slice 1 leek stalk into thick rounds. Be sure to rinse well, as leeks can have grit.
If using regular carrots, peel and slice them into thick rounds (about 1/2-inch thick). If using baby carrots, just leave them whole.
Place the sliced potatoes, leeks, and carrots in the bottom of a deep sheet pan or roasting pan (mine was 17.9"L x 13"W x 2"H) Spread them out on a single layer. Season with salt, pepper and olive oil.
Place a rack in the sheet pan on top of the vegetables.
Place the seasoned boneless leg of lamb on the rack, ensuring it is elevated above the vegetables.

Roast the lamb and vegetables

Transfer the pan to the preheated oven.
Roast the lamb for about 1.5 hours, or until it reaches your desired level of doneness.
For Rare: 120–125°F (49–52°C)
Medium-rare: 130–135°F (54–57°C)
Medium: 140–145°F (60–63°C)Well-done: 150°F (66°C) and above
Read the time and temperature guide in the blog post.

Rest the lamb

Once the lamb is done, remove it from the oven and let it rest for 10–15 minutes before slicing. This helps the juices redistribute and ensures a juicy roast.

Serve

Slice the lamb against the grain and serve with the roasted vegetables. Optionally, drizzle any pan juices over the top for extra flavor. You can also garnish with chopped fresh rosemary or thyme.