Instructions: 

1. Preheat oven to 350 degrees F and line 2 baking sheets with parchment paper. 

2. Mix together the egg, peanut butter, and sugar. 

3. Roll the dough into 12 balls. Place 6 on each baking sheet and press down on each ball with a fork in a criss cross pattern. 

4. Bake for 6-8 minutes. Taking cookies out when they turn slightly brown. 

5. Allow cookies to cool completely to ensure they set. Enjoy!