Father’s Day Herb-Roasted Leg of Lamb with Garlic and Rosemary

By AislePrompt Editorial · Published 2026-06-08 · Updated 2026-06-08

A classic herb-roasted leg of lamb infused with garlic and rosemary, presenting a fragrant and tender centerpiece for a special Father’s Day meal. This Mediterranean-inspired beef recipe, ready in about 140 minutes, pairs bone-in leg of lamb, fresh rosemary, fresh thyme for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 600 calories and feeds 8, 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

• 5 lbs bone-in leg of lamb
• 3 tbsp, chopped fresh rosemary
• 2 tbsp, chopped fresh thyme
• 6, minced garlic cloves
• 1/4 cup olive oil
• 2 tbsp kosher salt
• 1 tbsp black pepper
• 1 tbsp lemon zest

The instant-read thermometer we’d check this lamb with → Best Instant-Read Thermometers for 2026: Fast, Accurate Picks Under $100

Instructions

1. Step 1: Preheat oven to 375°F. In a small bowl, combine 3 tbsp chopped fresh rosemary, 2 tbsp chopped fresh thyme, 6 minced garlic cloves, 1/4 cup olive oil, 2 tbsp kosher salt, 1 tbsp black pepper, and 1 tbsp lemon zest to create a herb paste.
2. Step 2: Pat dry 5 lbs bone-in leg of lamb with paper towels. Rub the herb paste evenly all over the lamb, pressing it into the meat.
3. Step 3: Place the lamb on a roasting rack in a roasting pan. Roast uncovered for 1 hour 45 minutes to 2 hours, or until internal temperature reaches 135°F for medium-rare.
4. Step 4: Remove lamb from oven and tent loosely with foil. Let rest for 20 minutes before carving to allow juices to redistribute.