Source
The recipe I use is 1 cup PB, 1 cup sugar, 1 egg. I like to add a tablespoon of baking powder and a pinch of salt.
**INGREDIENTS**
*for 25 cookies*
1 cup peanut butter
½ cup sugar
1 egg
**PREPERATION**
1) Preheat oven to 350ºF (180ºC).
2) In a large bowl, mix together the peanut butter, sugar, and egg.
3) Scoop out a spoonful of dough and roll it into a ball. Place the cookie balls onto a nonstick baking sheet.
4) For extra decoration and to make them cook more evenly, flatten the cookie balls by pressing a fork down on top of them, then press it down again at a 90º angle to make a criss-cross pattern.
5) Bake for 8-10 minutes or until the bottom of the cookies are golden brown.
6) Remove from baking sheet and cool.