If you’re looking for a show-stopping dish that’s packed with flavor, a Grilled Boneless Leg of Lamb is a perfect choice. This recipe combines the rich, tender meat of lamb with a marinade bursting with aromatic herbs and spices. Grilling the lamb enhances its natural flavors while adding a smoky touch, making it ideal for special occasions or a weekend barbecue.
In this blog, we’ll guide you step by step on how to prepare, marinate, and grill the perfect boneless leg of lamb.

Why Choose a Grilled Boneless Leg of Lamb ?
The boneless leg of lamb is easier to handle than bone-in cuts, and its uniform shape ensures even cooking. It’s versatile, tender, and absorbs marinades beautifully. When grilled, it develops a crispy exterior while staying juicy inside.
Ingredients for Grilled Boneless Leg of Lamb
For the Lamb:
- 1 (4-5 lb) boneless leg of lamb (butterflied)
For the Marinade:
- ½ cup olive oil
- 4 garlic cloves (minced)
- 2 tbsp fresh rosemary (chopped)
- 2 tbsp fresh thyme (chopped)
- 1 tbsp Dijon mustard
- 1 tbsp lemon juice
- 1 tsp lemon zest
- 1 tsp smoked paprika
- 1 tsp ground cumin
- 1 tsp salt
- ½ tsp black pepper
Tools You’ll Need for the Grilled Boneless Leg of Lamb
- Large mixing bowl
- Sharp knife
- Zip-top bag or large dish for marinating
- Grill (charcoal or gas)
- Meat thermometer
Step-by-Step Instructions for the Grilled Boneless Leg of Lamb
Step 1: Prepare the Lamb
- Trim the lamb: Remove excess fat and sinew for even cooking.
- Butterfly the meat: If not already done, use a sharp knife to open up the leg of lamb to an even thickness.
Step 2: Make the Marinade
- In a large bowl, whisk together olive oil, garlic, rosemary, thyme, mustard, lemon juice, lemon zest, paprika, cumin, salt, and black pepper.
Step 3: Marinate the Lamb
- Place the lamb in a zip-top bag or a shallow dish. Pour the marinade over it, ensuring the meat is well-coated.
- Seal the bag or cover the dish with plastic wrap. Refrigerate for at least 4 hours, preferably overnight for maximum flavor.
Step 4: Preheat the Grill
- If using a gas grill, preheat to medium-high heat (375°F to 400°F).
- For a charcoal grill, prepare a two-zone fire by placing hot coals on one side.
Step 5: Grill the Lamb
- Remove the lamb from the refrigerator and let it come to room temperature for about 30 minutes.
- Place the lamb on the grill over direct heat. Sear for 4-5 minutes per side to develop a crust.
- Move the lamb to indirect heat. Cover the grill and cook until the internal temperature reaches 130°F for medium-rare or 140°F for medium. This usually takes 25-35 minutes.
- Use a meat thermometer to ensure accuracy.
Step 6: Rest and Slice
- Remove the lamb from the grill and tent it with foil. Let it rest for 10-15 minutes to allow the juices to redistribute.
- Slice thinly against the grain and serve.
Serving Suggestions for the Grilled Boneless Leg of Lamb
Pair the grilled lamb with:
- Herbed Couscous: A light and fluffy side that complements the lamb.
- Grilled Vegetables: Such as zucchini, eggplant, and bell peppers.
- Tzatziki Sauce: For a refreshing and tangy dip.
- Greek Salad: A fresh mix of cucumbers, tomatoes, olives, and feta cheese.
Tips for Perfect Grilled Boneless Leg of Lamb
- Marinate for Flavor: The longer the lamb marinates, the deeper the flavors penetrate.
- Don’t Skip the Resting: Resting ensures the meat stays juicy and tender.
- Adjust Cooking Time: Thicker parts of the lamb may take slightly longer to cook.
- Use a Meat Thermometer: To avoid overcooking, check the internal temperature frequently.
- Trim Wisely: Remove large fat pockets, but leave some for added flavor during grilling.
Variations about the Grilled Boneless Leg of Lamb
1. Mediterranean-Style
- Add oregano and lemon zest to the marinade and serve with hummus.
2. Spicy Lamb
- Include cayenne pepper or chili flakes for a spicy kick.
3. Mint and Yogurt Marinade
- Replace the olive oil with plain yogurt and add chopped mint for a cooling, creamy flavor profile.

Frequently Asked Questions about the Grilled Boneless Leg of Lamb
Can I Use This Recipe for Bone-In Leg of Lamb?
Yes, but the cooking time will be longer due to the bone. Adjust accordingly.
Can I Cook the Lamb in the Oven Instead?
Absolutely. Sear the lamb in a hot skillet, then roast in the oven at 375°F until it reaches the desired temperature.
How Do I Store Leftovers?
Place sliced lamb in an airtight container and refrigerate for up to 3 days. Reheat gently to avoid drying out.
Nutritional Information for the Grilled Boneless Leg of Lamb
- Calories: ~320
- Protein: 28g
- Fat: 22g
- Carbohydrates: 2g
- Fiber: 0g
Conclusion about the Grilled Boneless Leg of Lamb
Grilled Boneless Leg of Lamb is a dish that’s as impressive as it is delicious. Its rich, smoky flavors and tender texture make it a standout option for any gathering. With this recipe, you’ll have a foolproof way to prepare lamb that’s sure to wow your family and friends.
So fire up the grill and give this recipe a try—you’ll savor every bite!