Preheat your oven to 375 ℉.
Unwrap Hershey's Kisses.
Beat together peanut butter and shortening.
Add in brown sugar and sugar and mix well.
Beat in egg, milk, and vanilla and mix until fluffy.
In a separate bowl sift together flour, baking soda, and salt.
Add dry ingredients into the wet, a little at a time.
Shape dough into one inch balls. Use a tablespoon to measure the dough.
Roll each ball of dough into red or green sugar.
Place dough balls on an ungreased cookie sheet.
Bake for 8-10 minutes or until the cookies are lightly browned.
Immediately after you take the cookies out of the oven, place a Hershey's kiss in the middle.
Allow to cool.
Yields between 3-4 dozen cookies.