In a large bowl, cream together butter, peanut butter, sugars, egg and vanilla.

By hand, stir in dry ingredients.

Roll into balls and place in a seals container; refrigerate dough balls a few hours before baking.

When ready to bake, dip each ball in white sugar..

Place on ungreased cookie sheets and bake at 350 degrees for 8-10 minutes (until flattened and cracked a bit).

Open oven door and pull out oven rack and press a chocolate kiss onto each cookie and continue baking 2-3 minutes until cookies are done.

Cool on wire racks lined with paper towel to absorb the grease.