Peanut Butter Kiss Cookies

First Christmas cookies of the season!
These are our favorite holiday cookies, hands down.
Our first Christmas married we were in Italy. We had just moved there one month prior and moved into our home just days before the holiday but still had no furniture. Phil had duty. He was stuck on the ship. I was in a new country 6 months pregnant and alone. We had already planned to celebrate the next day. So what did I do Christmas day all homesick and lonely? I made these. I took them still melty and warm to Phillipp on the ship. Every single guy on the way to Phil begged for one but were denied (poor things). These are some powerful cookies! If you like peanut butter and chocolate, make these. You won't be disappointed.
1/2 c butter
1/2 c peanut butter
1/2 c white sugar
1/2 c brown sugar
1 egg
2T milk
1t vanilla extract
1 3/4c flour
1t baking powder
1/8t baking soda
1/4t salt
1/3c granulated sugar (for decoration)
48 (approx) chocolate kisses or hugs, unwrapped (Phil's favorite are the hugs)

In a large mixing bowl beat the butter or margarine and peanut butter. Add the sugars and beat until fluffy. Add egg, milk and vanilla and beat again.
In a separate bowl mix together flour, baking powder, baking soda and salt. Gradually add the flour mixture to the peanut butter mixture until combined.
Cover and chill for 1 hour (approx). Meanwhile preheat oven to 375 degrees F.
Shape dough into 1 inch balls and roll in decoration sugar.
Bake for 10-12 minutes or until edges are firm. Remove and immediately press a chocolate kiss into each cookie. Quickly transfer cookies to a cooling rack (if you wait too long the chocolate will melt and warp when transferred).
My original recipe says "let cool" but I disagree. My favorite way to eat these cookies is fresh out of the oven when the kiss has just melted almost up to the tip. The real problem is trying to stop eating them that way...