Peel all of the loose papery skin from the outside of the garlic bulb, leaving the bulb intact. Cut off the top of the bulb, leaving the top of the cloves exposed.
Place the bulb on a sheet of foil, drizzle over 2 tablespoons olive oil and throughly rub the olive oil onto the entire surface of the bulb.
Close the foil and place the package in an oven-proof dish.
Roast the garlic until the cloves are soft when pierced with a small, sharp knife, about 40 minutes. Let the garlic cool for about 10 minutes before handling.