Indian-Spiced Butterflied Leg of Lamb with Roasted Onion Relish

Timing mysteries and guesswork do not exist with this method of cooking a leg of lamb because, since the leg is opened, boned, and flattened out, you can see everything that is going on when it is cooking, and it cooks more or less evenly like a steak.

A 6-pound leg of lamb when butterflied gives you a nearly 4- to