Pour two cups of roasted peanuts into a food processor bowl that has metal food processor blade attached. Add two teaspoons vegetable oil. Cover the bowl with the food processor lid and chop up the peanuts continuously for three minutes or until the mixture forms a ball.

Scrape down the food processor bowl, if needed, when processing the peanuts.

Spoon peanut butter into a jar and seal. Store in the refrigerator.