Peanut butter peanut brittle and candy bars are also often eaten . They can be eaten as straight food , used in recipes , made into solvents and oils , used in make-up , medicines , textile materials , peanut butter , as well as many other uses . Popular confections made from peanuts include salted peanuts , peanut butter ( sandwiches , peanut candy bars , peanut butter cookies , and cups ) , peanut brittle , and shelled nuts ( plain\/roasted ) .