Optionally remove the leg of lamb from the fridge 1 hr before cooking. This will help it cook more evenly.
Preheat the oven to 450F.
In a food processor blend all of the marinade ingredients together.
Blot the leg of lamb dry with paper towel then rub with the marinade.
Place lamb on a roasting grate over a tin foil lined sheet pan.
Place in the oven and roast for 10 min. Without opening the oven door, reduce temperature to 350F.
Roast lamb until desired doneness. This depends on how big your leg of lamb is but a general rule of thumb is medium will have an internal temperature around 145F and 160F is well done. Please note that the internal temperature will continue to rise 10 degrees after you remove it.
My lamb leg took approximately 90 minutes. Tent with foil and rest for 20-30 min.
Slice and serve with your favourite holiday sides.