Original source: Allrecipes.com

1 cup white sugar
1 cup peanut butter
1 egg
18 milk chocolate candy kisses, unwrapped

1. Preheat oven to 350 degrees F.
2. Combine sugar, peanut butter, and egg.
3. Shape into 1 inch balls and place on ungreased cookie sheet. NOTE: If dough is too sticky, refrigerate 1/2 hour or until easy to handle.
4. Bake for 10 minutes. Remove cookies from oven. Press a chocolate kiss into the center of each warm cookie.