Preheat the oven to 350 degrees F.
Place the garlic on a foil-lined baking sheet and rub 1 teaspoon of oil into the top of each head. Sprinkle lightly with salt and pepper and place, cut side down, on the baking sheet. Bake until the cloves are soft and golden, about 1 hour. Remove from the oven and let sit until cool enough to handle. Carefully remove each clove of garlic from the head. Squeeze each head of garlic to expel any cloves that you cannot remove individually. Set aside until needed.
Yield: enough for 1 pizza