Combine flour, cocoa, baking powder and salt in medium bowl and set aside.
Melt chocolate morsels in microwave. Cook for 1 minute, remove and stir, then cook an addition minute.
Add espresso powder to chocolate and stir to combine.
In an electric mixing bowl add butter and brown sugar and blend until creamy.
Add eggs, vanilla and peppermint extract while mixing on low speed until blended.
Add chocolate mix and blend.
Alternating between flour mix and milk add, ending with flour mixture.
Form dough into a ball and wrap with with sedan wrap. Refrigerate for at least an hour.
Preheat oven to 350 degrees and line two baking sheets with parchment paper.
Place confectioners sugar in one bowl and sugar in another.
Roll dough into 1" balls and then drop ball into sugar bowl, rolling to coat.
Then roll ball into confectioners sugar to coat.
Place on baking sheets 2" apart.
Bake with cookie sheets on top and bottom racks for 6 minutes.
Switch cookie sheets, top to bottom, bottom to top and cook an additional 6 minutes