Cut approximately ½ inch off the top of each head of garlic. Peel as much of the papery skin off as you can. Make sure to expose the top of each clove of garlic.
Place one head of garlic in each section of a muffin pan. Drizzle olive oil over each head of garlic and rub it in making sure the garlic is well coated.
Place a second inverted muffin pan on top.
Bake in the oven for 40 - 45 minutes. Roasted garlic is done when the tops are nicely caramelized and the tip of a knife is easily inserted into an inner clove.
Once cooled, squeeze each garlic clove from its skin.
Notes
Storage
Whole heads of roasted garlic can be stored in the refrigerator, in an air-tight container for 3-4 days.
Garlic cloves submerged in olive oil in a sealed jar will keep in the refrigerator for up to 2 weeks.
My favorite way to store garlic is to make a paste by mashing the garlic with a little olive oil and then freezing it in ready-to-use portions in an ice cube tray.