Preheat the oven to 450°F.
IN a large bowl rub down the lamb with olive oil, salt, coriander, cumin, garlic powder, onion powder, paprika and pepper until all sides of the leg of lamb are covered.
PLACE the leg of lamb in an ALCAN® Heavy Duty 30 lb Roaster, place it on a baking sheet and bake in the oven for 30 minutes.
REDUCE heat to 350°F and finish cooking the lamb for 30 minutes or until it has an internal temperature of 145°F. Remove the lamb from the oven and let the meat rest for 10-15 minutes.
Slice the leg of lamb before serving.