This recipe is everything you could wanted from a peanut butter cookie, without the flour.
For an added twist add a Chocolate Kiss to the center of the cookie.

Makes about two dozen cookies

Ingredients
1 cup chunky or smooth peanut butter
1 cup sugar (1/2 cup brown sugar and 1/2 cup granulated sugar)
1 egg
1 teaspoon baking soda

Directions
Preheat oven to 350 degrees F.  Grease a baking sheet with butter and set aside.  In a mixer combine peanut butter and sugars until well combined, about 2 minutes.  Add egg and baking soda and mix for another 2 minutes.  Roll into walnut sized balls and create a cris-cross pattern with a fork.  If you’d like, add a chocolate kiss to the top of the cookies.  Bake for 10 minutes, until lightly browned.  Cool on a baking sheet for two minutes.