Preheat oven to 400°F.
Peel away garlic bulb’s outer layer of skin, leaving the individual cloves’ skins intact. Cut off 1/4 to a 1/2 inch of the top of cloves, exposing the individual cloves of garlic.
Place the garlic heads on a piece of aluminum foil. Drizzle a couple teaspoons of olive oil over each head. Cover with the aluminum foil and press cloves into the shape of a little round ball. Bake at 400 °F for 30—35 minutes, or until the cloves feel soft when pressed.
Use a small fork or your fingers to pull or squeeze the roasted garlic cloves out of their skins.