Peanut Butter or Jelly is a classic combination of spreads that have been enjoyed for generations. The term 'Peanut Butter or Jelly' can be summed up in the six-letter word 'SPREAD', which is often used to describe the act of spreading either of these two ingredients on bread or toast. Peanut Butter and Jelly are both popular sandwich fillings, and they can also be used as a topping for other foods such as crackers, pancakes, and waffles.