Preheat oven to 375º. Bake on ungreased cookie sheet.
Remove wrappers from chocolate kisses.
In mixer bowl, cream shortening and peanut butter; blend well.
Add 1/3 c. granulated sugar and brown sugar; beat until fluffy.
Add egg, milk and vanilla; beat well.
Stir together flour, baking soda and salt; gradually beat into peanut butter mixture.
Using cookie scoop, shape dough into 1" balls.
Roll each dough ball in granulated sugar; place on ungreased cookie sheet.
Bake in 375º oven for 8-10 minutes or until lightly browned.
Immediately upon removal from oven, press a chocolate kiss into the center of each cookie; cookie will crack around edges.
Let cookies cool slightly on cookie sheet.
Remove cookies from cookie sheet to wire cooling rack.