Preheat the oven. Heat the oven to 350°F and lightly grease baking sheets or line them with parchment paper.

Cream the butter and sugar. In a large mixing bowl, cream butter and granulated sugar until light; add vanilla, then beat in eggs and melted chocolate.

Finish and shape the cookie dough. Stir in dry ingredients alternately with milk. Stir in chopped pecans (if using). Shape dough into 1-inch balls (chill if necessary to make the dough firmer).

Roll in powdered sugar. Roll balls in confectioners' sugar and place on the baking sheets about 2 inches apart.

Bake. Transfer the cookies to the oven and bake for 14 to 16 minutes or until cookies are firm in the center. Remove from baking sheets and cool on racks.