I have done this garlic recipe in the past.
Peel away the outer layers of the garlic bulb skin, leaving the skins of the individual cloves intact. Using a knife, cut off 1/4 to a 1/2 inch of the top of cloves, exposing the individual cloves of garlic drizzle with a little olive oil , salt and pepper. Smoked it at 325 with hickory wood for like 60 minutes. Once it is softened we spread it on toasted bread we did on the grill.
Basically took a roasting garlic recipe from the internet and modified it.
Awesome!