Heat oven to 350 degrees.
Blend together flour, baking soda and powder and salt and set aside.
Beat butter and peanut butter with an electric mixer until smooth.
Add sugars and beat until fluffy.
Blend in egg and vanilla.
Add in the flour mixture and stir until combine.
Place additional white sugar in a small bowl.
Form balls using 1 Tablespoon of dough for each cookie.
Roll the balls in the sugar and then place on prepared cookie sheets about 2 inches apart.
Bake for approximately 7-8 minutes or until puffed up and edges are just beginning to brown.
Remove from oven and top each cookie with a Hershey Kiss and press down slightly.
Return to oven for 2-3 minutes until light brown. Remove from oven.
Allow to cool 2 minutes before moving to cool completely on wire racks.