INGREDIENTS
1/2 cup
butter, softened
1 cup
dark brown sugar, firmly packed
1
egg
1 tsp
vanilla extract
2 cups
all-purpose flour
1/2 cup
cocoa powder
1 1/4 tsp
baking soda
1/4 tsp
salt
1 cup
buttermilk
3 cups
powdered sugar (confectioner’s)
1/2 cup
unsalted butter, softened
3 tbsp
half and half
1 tsp
vanilla extract