Slow-Roasted Garlic and Herb Leg of Lamb

By AislePrompt Editorial · Published 2026-06-14 · Updated 2026-06-14

Tender leg of lamb slow-roasted with fresh garlic, rosemary, and thyme for an aromatic, deeply flavored centerpiece. This Mediterranean-inspired lamb recipe, ready in about 195 minutes, pairs leg of lamb, garlic cloves, fresh rosemary for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 450 calories and feeds 6, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Ingredients

• 4 lbs leg of lamb
• 6, minced garlic cloves
• 2 tbsp, chopped fresh rosemary
• 2 tbsp, chopped fresh thyme
• 3 tbsp olive oil
• 2 tsp salt
• 1 tsp black pepper
• 1 tsp lemon zest

Know when the lamb is done: thermometers under $100 → Best Instant-Read Thermometers for 2026: Fast, Accurate Picks Under $100

Instructions

1. Step 1: Preheat your oven to 325°F. In a small bowl, mix 6 minced garlic cloves, 2 tbsp chopped fresh rosemary, 2 tbsp chopped fresh thyme, 3 tbsp olive oil, 2 tsp salt, 1 tsp black pepper, and 1 tsp lemon zest to create a fragrant herb paste.
2. Step 2: Pat dry the 4 lbs leg of lamb and rub the herb paste all over the meat evenly, pressing it into the surface to adhere.
3. Step 3: Place the lamb on a roasting rack in a roasting pan and cook in the preheated oven for about 2.5 to 3 hours, or until a meat thermometer inserted into the thickest part reads 135°F for medium-rare.
4. Step 4: Remove the lamb from the oven and tent loosely with foil; let rest for 20 minutes before slicing to allow juices to redistribute.