Chocolate Crackle Cookies

Note that this dough is really messy.

8 oz. bittersweet chocolate, coarsely chopped
1 ¼ c. flour
½ c. cocoa powder
2 t. baking powder
¼ t. salt
8 T unsalted butter, softened
1 1/3 c. light brown sugar
2 eggs
1 t. vanilla
1/3 c. milk
1 c. powdered sugar (plus more for rolling)

Preheat oven to 350.
Melt chocolate. Set aside to cool.
Sift flour, cocoa, baking powder, and salt.
In separate bowl, cream butter and sugar until light. Add eggs and vanilla. Add melted chocolate. Add dry ingredients alternating with milk. Stir until just combined. Divide into quarters. Wrap with plastic and chill 2 hours. Line baking sheets with parchment paper.
Roll ball of dough into a log about sixteen inches in length. Cut off pieces in one inch increment. Shape piece into a ball. Roll in powdered sugar. Bake 12-15 minutes. Cool on wire rack.

from Martha Stewart