These were a little bit of a pain to make, but so worth it.
Chocolate-Espresso Snowcaps
1/2 cup all-purpose flour
1/4 cup unsweetened cocoa powder
4 teaspoons instant espresso
1 teaspoon baking powder
1/8 teaspoon salt
4 tablespoons unsalted butter
2/3 cup packed light-brown sugar
1 large egg
4 ounces bittersweet or semisweet chocolate, melted and cooled
1 tablespoon milk
Confectioners' sugar, for coating
Bake until cookies have spread and coating is cracked, 12 to 14 minutes; cookies will still be soft to the touch. Cool cookies on a wire rack.