01 -
Preheat oven to 375°F (190°C) and let the lamb sit at room temperature for 30 minutes.
02 -
In a bowl, mix softened unsalted butter, minced garlic, chopped rosemary, salt, pepper, and lemon juice until well combined.
03 -
Pat the leg of lamb dry and rub half of the garlic butter mixture all over it.
04 -
Place the lamb in a roasting pan and roast for about 1 hour or until the internal temperature reaches 135°F (57°C) for medium-rare.
05 -
Baste every 20 minutes with the remaining garlic butter mixture. Rest for 15 minutes before carving.