INGREDIENTS
1
Egg, large
1/2 cup
All-purpose flour
1 tsp
Baking powder
2/3 cup
Brown sugar, packed light
4 oz
Chocolate, bittersweet or semisweet
1/4 cup
Cocoa powder, unsweetened
1
Confectioners' sugar
1/8 tsp
Salt
4 tsp
Espresso, instant
4 tbsp
Butter, unsalted
1 tbsp
Milk