INGREDIENTS
1 1/2 cups
all-purpose flour
1 1/2 cups
granulated sugar
3/4 cup
Dutch-processed cocoa powder (sifted)
1/4 cup
powdered peanut butter (optional)
1 1/2 tsp
baking soda
1 tsp
baking powder
1 tsp
salt
1/4 cup
vegetable oil
3/4 cup
buttermilk (room temperature)
3/4 cup
hot water
2
large eggs (room temperature)
2 tsp
vanilla
5
large egg whites
1 2/3 cups
dark brown sugar (lightly packed)
1 1/2 cups
unsalted butter (cubed, room temperature)
1/2 cup
powdered peanut butter
1 tsp
vanilla