Gather all ingredients. Preheat the oven to 350 degrees F (175 degrees C).

Mix peanut butter, sugar, and egg together in a bowl using an electric mixer until smooth and creamy.

Roll mixture into 1-inch balls and place 1 inch apart on an ungreased baking sheet

Flatten each with a fork, making a criss-cross pattern.

Bake in the preheated oven until edges are firm, about 10 minutes.

Cool on the baking sheet briefly before removing to a wire rack to cool completely.

Enjoy!