Trim away a little off the top of the heads of garlic. This will expose the tops of the garlic cloves.
Rub the oil onto the heads of garlic and let it drip down into the exposed cloves.
Wrap the garlic bulbs in foil and place into a baking dish. Bake for 40 minutes to 1 hour.After 40 minutes, open one up from it's foil and check if the cloves are super soft and starting to brown and caramelise. If necessary, re-wrap and cook a little longer.
Notes
Store roasted garlic cloves, wrapped, for up to 4 days in the fridge.Uses for roasted garlic:
Spread onto bruschetta or toast.
Stir into hummus or other dips.
Mix the roasted garlic into softened butter and use as a condiment.
Add the roasted cloves to a sanitized jar of olive oil to make garlic oil.