Preheat oven to 350 degrees F.

Combine peanut butter, sugar and egg in a medium bowl.

Shape dough into 1.5 in. diameter balls, approximately the size of a golf ball. Using the back-side of a fork, gently press the top of the ball to make lines in the dough. Rotate the fork 90 degrees and gently press again, creating a crisscross pattern.

Bake for 10-12 minutes. Be careful not to overbake! Remove from oven and allow to cool a few minutes before transferring to a cooling rack.