Chocolate Peanut Butter Cupcakes

INGREDIENTS

3 3/4 oz

all purpose flour (3/4 cup, measured)

1/4

cup+ 2 tbsp unsweetened cocoa powder

1 cup

granulated sugar

1 tsp

baking soda

1/2 tsp

baking powder

1/2 tsp

salt

1/2 cup

whole buttermilk*

1/4 cup

grapeseed oil

large egg

1/2 tsp

vanilla extract

1/2 cup

coffee

chocolate syrup or chocolate ganache, for drizzling, optional

chopped peanuts, for garnish, optional

1 cup

unsalted butter, at room temperature (2 sticks)

5 oz

confectioner's sugar (1 cup)

3/4 cup

peanut butter

1 tsp

vanilla extract