INGREDIENTS
1
Egg, large
1 cup
All-purpose unbleached flour
1/2 tsp
Baking powder
1/8 tsp
Baking soda
1 cup
Brown sugar, packed dark
1 cup
Confectioners' sugar
1/2 tsp
Salt
1 tsp
Vanilla extract
1
unsalted butter (8tbsp, unsalted
5 tbsp
Butter, unsalted
1 tsp
Milk