Recipe for Rack of Lamb?

Try this. Lamb isn't really suited for the grill, because you need pretty close temperature control, and lamb is fatty and will cause flare ups. If you insist, use a thermometer to avoid overcooking it.

Sous vide followed by a cast iron sear is how I've done it for years. I normally just hit it with salt, pepper, and a spring of rosemary on each side of the rack. Sam's is where I've always bought racks of lamb.

Rack of lamb is great on the grill! I do it with charcoal and wood chunks on side opposite the lamb with cover arranged with smoke holes above the lamb. Control the temp below 300F and cook/smoke for 30 minutes or so. We soak in soy and tabasco sauce prior. Garlic and harissa powder is all we season with. Sometimes make a horseradish/sour cream sauce.

That's all I got.