Heat oven to 325 degrees
Beat shortening and peanut butter, add sugar and brown sugar
Add egg, milk and vanilla
In a separate bowl, stir together flour, baking soda and salt
Gradually beat flour mixture into peanut butter mixture
Shape dough into 1" balls, roll in additional sugar
Bake 8-10 minutes on an ungreased cookie sheet until lightly browned
Immediately press Hershey's Kiss into center of each cookie, cookie will crack around the edges
