BBQ Lamb Leg Recipe Grill: Smoky Herb Crust and Rosy Centers

I’ve perfected the art of grilling a tender lamb leg, and I’m excited to share my technique with you. A well-marinated lamb leg, combined with a precise grilling method, yields a dish that’s both flavorful and tender.

This BBQ lamb leg recipe delivers tender perfection every time, with a deliciously charred exterior and a juicy interior. Serve with your favorite sides, such as roasted vegetables or a fresh salad, for a complete meal.

Ingredients for Bbq Lamb Leg Recipe Grill

Grill up tender perfection with these quality ingredients for a memorable BBQ lamb leg.

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For the best lamb, look for grass-fed or pasture-raised at specialty butchers or high-end grocery stores. Costco often has excellent deals on quality lamb legs. If you can’t find bone-in, boneless works too—just watch the cooking time.

No fresh rosemary? Dried rosemary works at one-third the amount. For the red wine, feel free to swap with beef broth if you’re out. The honey in the glaze adds a nice caramelized crust, but skip it if you prefer. Fresh thyme can be substituted with oregano or marjoram in a pinch.

Leftover lamb keeps beautifully—4-5 days in the fridge. Slice thin for sandwiches or serve with roasted veggies. You can freeze the cooked lamb for up to 3 months. Reheat gently to keep it tender.

Step-by-Step Instructions for BBQ Lamb Leg

Let’s get started with grilling the perfect lamb leg—tender, flavorful, and sure to impress.

🔥 Step 1: Prepare the Marinade and Lamb

First, combine the 0.25 cup olive oil, 6 cloves minced garlic, 0.25 cup chopped fresh rosemary, 2 tablespoons chopped fresh thyme, 2 tablespoons freshly squeezed lemon juice, 1 teaspoon kosher salt, 0.5 teaspoon freshly ground black pepper, and 1 teaspoon smoked paprika in a bowl. Whisk until well combined. I like to use a mortar and pestle to crush the herbs slightly, releasing their oils and intensifying the flavor.

Place the 1.5 lb bone-in lamb leg in a large zip-top plastic bag or a non-reactive container. Pour the marinade over the lamb, turning to coat evenly. Seal the bag or cover the container. Refrigerate for at least 4 hours or overnight (8-12 hours) for maximum flavor penetration.

🔥 Step 2: Set Up Your Grill for Indirect Heat

Preheat your grill to medium-high heat (about 400°F). For gas grills, turn off one burner to create an indirect heat zone. For charcoal grills, push coals to one side. I use a grill thermometer to ensure accurate temperature readings. Let the grill grates preheat for 10-15 minutes before adding the lamb.

Remove the lamb from the marinade, letting any excess drip off. Pat dry with paper towels to promote better browning. Season with additional salt and pepper if desired. Place the lamb leg on the indirect heat side of the grill, bone side down if bone-in. Close the lid to trap heat and smoke.

⏰ Step 3: Grill and Monitor Temperature

Grill the lamb for 20-25 minutes per pound, or until it reaches your desired level of doneness. For medium-rare, aim for an internal temperature of 145°F. Use a meat thermometer inserted into the thickest part of the meat, avoiding the bone. Rotate the lamb 90 degrees every 20 minutes to promote even cooking. If using a charcoal grill, add more coals as needed to maintain temperature.

During the last 10 minutes of cooking, you can brush the lamb with a glaze made from 0.5 cup red wine (if using) and 1 tablespoon honey. Simmer these ingredients in a small saucepan over medium heat until reduced by half and slightly thickened. This adds a beautiful sheen and extra layer of flavor.

🔥 Step 4: Rest and Carve the Lamb

Once the lamb reaches the desired temperature, remove it from the grill and transfer to a cutting board. Tent loosely with foil to retain heat. Let rest for 15-20 minutes. This resting period allows juices to redistribute throughout the meat, ensuring tender, flavorful slices.

Carve the lamb against the grain using a sharp knife. Slice into ¼-inch thick pieces. The meat should be tender and juicy, with a nice char on the outside from the grill. Serve immediately, garnished with additional fresh herbs if desired.

Troubleshooting This Dish

Common Grilling Issues

One of the most common problems with grilling lamb is uneven cooking. To avoid this,

Temperature Control Challenges

Maintaining consistent grill temperature can be tricky, especially with charcoal grills. To keep your grill at 400°F, adjust the vents to control airflow. For gas grills, use the built-in thermometer to monitor temperature. If you notice flare-ups, move the lamb to a cooler part of the grill temporarily. I like to keep a grill thermometer handy to double-check the temperature.

Preventing Dry Lamb

Dry lamb is often the result of overcooking. To keep your lamb juicy, cook it to the right temperature: 145°F for medium-rare. Letting the lamb rest for 15-20 minutes after grilling also helps retain juices. If you’re concerned about dryness, consider using a marinade with acidic ingredients like lemon juice to help tenderize the meat.

Dealing with Flare-Ups

Flare-ups can char your lamb unevenly. To minimize this risk, pat the lamb dry with paper towels before grilling to reduce excess moisture. If a flare-up occurs, move the lamb to a cooler part of the grill until the flames die down. Keeping a spray bottle nearby can also help control sudden flare-ups.

Grill Mark Tips

Achieving those perfect grill marks adds visual appeal. Make sure your grill grates are clean and preheated. Place the lamb on the grill at a 45-degree angle to the grates for diamond-shaped marks. After a few minutes, rotate it 90 degrees to create the pattern. Let it cook undisturbed for a few minutes to get a nice sear.