Heat oven to 375°F.
Beat shortening and peanut butter in large bowl until well blended. Add 1/3 cup granulated sugar and brown sugar; beat until light and fluffy.
Add egg, milk and vanilla; beat well.
Combine flour, baking soda and salt; gradually add to peanut butter mixture, beating until well blended.
Shape dough into 1-inch balls.
Roll in granulated sugar; place on ungreased cookie sheet.
Bake 8 to 10 minutes or until lightly browned.
Immediately place 3 chocolates on top of each cookie, pressing down slightly.
Remove from cookie sheet to wire rack.
Cool completely.