A butterflied lamb leg is a bone-in leg of lamb that has been prepared by a butcher in a specific way for easier cooking and faster, more even grilling or roasting.
A butterflied lamb leg is excellent for grilling, as the flatter shape allows for quicker and more consistent cooking, and the bone adds flavor. It's also suitable for roasting in the oven. This preparation method is convenient for those who prefer a faster cooking time and an easier carving process.