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Perfect Herb-Crusted Leg of Lamb Recipe with Garlic Rosemary Butter for Easy Gourmet Dinner

herb-crusted leg of lamb - featured image

A simple yet impressive herb-crusted leg of lamb roasted with garlic rosemary butter, delivering juicy, tender meat with a crispy, flavorful crust. Perfect for dinner parties or a special weekend meal.

Ingredients

  • Leg of lamb (bone-in, about 4-5 pounds / 1.8-2.3 kg)
  • Unsalted butter (1/2 cup / 115 g, softened)
  • Fresh rosemary (2 tablespoons, finely chopped)
  • Garlic cloves (4 large, minced)
  • Fresh thyme leaves (1 tablespoon, finely chopped)
  • Lemon zest (1 teaspoon)
  • Salt (1 teaspoon, kosher salt recommended)
  • Black pepper (1 teaspoon, freshly ground)
  • Olive oil (2 tablespoons)

Instructions

  1. Preheat your oven to 425°F (220°C).
  2. In a mixing bowl, combine 1/2 cup softened unsalted butter with 4 minced garlic cloves, 2 tablespoons chopped fresh rosemary, 1 tablespoon fresh thyme leaves, 1 teaspoon lemon zest, 1 teaspoon kosher salt, and 1 teaspoon freshly ground black pepper. Mix thoroughly.
  3. Pat the leg of lamb dry with paper towels. Lightly score the fat layer in a crisscross pattern with a sharp knife, being careful not to cut into the meat.
  4. Rub 2 tablespoons olive oil evenly over the lamb, then generously coat the entire surface with the garlic rosemary butter using a pastry brush or spoon.
  5. Place the lamb on a roasting rack inside your pan, fat side up.
  6. Roast the lamb in the preheated oven for 20 minutes to develop a golden crust.
  7. Reduce the oven temperature to 350°F (175°C) and continue roasting for about 1 hour and 10 minutes for medium-rare (internal temperature 135°F/57°C). Adjust time for preferred doneness.
  8. Use a meat thermometer to check doneness starting at the 50-minute mark.
  9. Remove the lamb from the oven and tent loosely with foil. Let it rest for 15-20 minutes before carving.
  10. Slice against the grain and serve with pan juices or extra garlic rosemary butter if desired.

Notes

Let the lamb rest for 15-20 minutes after roasting to allow juices to redistribute. Use a meat thermometer for best results. If crust browns too fast, cover loosely with foil. Butter should be softened but not melted when applied. Room temperature meat cooks more evenly.

Nutrition

Keywords: leg of lamb, herb crust, garlic rosemary butter, roast lamb, easy gourmet dinner, dinner party recipe, lamb roast