INGREDIENTS
1 cup
all-purpose flour
1/4 cup
plus 2 tablespoons (30 grams) unsweetened cocoa powder
3/4 tsp
baking powder
1/2 tsp
baking soda
1/2 tsp
salt
1/2 cup
brown sugar
1/2 cup
granulated sugar
1/3 cup
oil
1/2 cup
buttermilk
1
large egg
1 tsp
vanilla extract
1/2 cup
boiling water
1 tsp
instant espresso powder (optional)
1/2 cup
unsalted butter, softened
1 cup
creamy peanut butter
2 cups
powdered sugar
3 tbsp
heavy whipping cream
1 tsp
vanilla extract
Chocolate ganache
8
miniature peanut butter cups, unwrapped and cut in half