Preheat oven to 375°F.
In a mixing bowl with the beater attachments, cream the shortening and peanut butter until well blended.
Add ⅓ cup granulated sugar and brown sugar; beat until fluffy.
Add egg, milk and vanilla; beat well.
In a separate bowl, stir together flour, baking soda and salt; gradually add the dry ingredients into the peanut butter mixture.
Using a small cookie scoop, portion out the peanut butter dough and shape dough into 1-inch balls.
Roll the peanut butter balls in granulated sugar.
Place the cookie dough balls on an un-greased cookie sheet, a cookie sheet line with parchment paper OR a sil pat matt.
Bake at 375 for 8-10 minutes or until slightly brown.
Immediately press an unwrapped Hershey's chocolate kiss into center of each cookie.
As soon as all the kisses have been pressed into the peanut butter cookie, immediately remove from cookie sheet to wire rack.
Cool completely.