First, preheat your oven to 400 degrees Fahrenheit.
On a flat surface, arrange a sheet of aluminum foil large enough to wrap your garlic in.
Slice the TOPS of the garlic heads off about ¼ of an inch to expose the cloves. (The top is the pointed end of the garlic, NOT the root end.)
Drizzle the garlic with olive oil. Use about 1 teaspoon per head.
Sprinkle a pinch of salt and a pinch of pepper over the top.
Fold the aluminum foil loosely over the garlic on all sides, tucking and folding to secure it. Make sure the seam side stays up.
Place the foil packet directly on the center oven rack and bake for 45 minutes.
Remove the foil packet from the oven, let cool. Open and squeeze out the garlic to use.
Notes
The nutritional information and recipe is based on ONE head of garlic for ease of calculation. You can roast one or several heads of garlic at one time.