First - combine the flour, sugar, and the cocoa powder.
Then, cut in the butter. I cheated - I put it all in my mixer on low, since I was having a hard time cutting in the butter. It worked well.
Roll up the dough and cut into 1/4-1/2 inch cookies.
Lay out evenly - they will grow a bit.
Bake at 325 degrees for 18 minutes.
While baking, double boil the white chocolate chips and milk.
Stir until smooth and set aside (don't let it cool too much, but it shouldn't be hot).
Let the cookies cool for about 9 minutes and then decorate with white chocolate chip drizzle.