INGREDIENTS
3/4 cup
unsweetened cocoa powder
3/4 cup
all-purpose flour
1/2 tsp
baking powder
1/4 tsp
salt
3/4 cup
unsalted butter, room temperature
1 cup
sugar
3
large eggs
1 tsp
vanilla extract
1/2 cup
sour cream
for the frosting
1 cup
heavy cream
6 oz
good semi sweet chocolate, chopped
1/2 cup
confectioner's sugar, sifted
1/3 cup
dark cocoa powder, sifted