INGREDIENTS
Makes 25 to 30 sandwich cookies
For the chocolate wafers:
1 1/4 cups
all-purpose flour
1/2 cup
unsweetened Dutch process cocoa (Fry’s Cocoa Powder will work in Canada)
1 tsp
baking soda
1/4 tsp
baking powder
1/4 tsp
salt
1 cup
sugar
1/2 cup
plus 2 tablespoons room-temperature, unsalted butter
1
large egg
For the filling:
1/4 cup
room-temperature, unsalted butter
1/4 cup
vegetable shortening
2 cups
sifted icing sugar
2 tsp
vanilla extract