Preheat oven to 350 degrees F (175 degrees C). Line baking sheets with parchment paper.
2
Combine the peanut butter, white sugar and egg. Mix until smooth.
3
Drop spoonfuls of dough onto the prepared baking sheet (about 1 tbsp each). Bake at 350 degrees F (175 degrees C) for 6 to 8 minutes. Do not overbake! These cookies are best when they are still soft and just barely brown on the bottoms.