Peanut butter can be a part of a keto diet because it contains a high amount of fat and a low amount of carbs. Some people who follow a keto diet choose not to eat peanut butter because it is a legume and opt for other kinds of nut butter instead. Really, it’s up to you to decide if peanut butter makes sense for your personal diet. If you’re counting carbs, just be sure to keep track of how much of this peanut butter board you enjoy because the peanut butter, toppings, and dippers you choose all have carbs that can add up quickly.