INGREDIENTS
2 cups
all-purpose flour
1 cup
Dutch-process cocoa powder
1 1/2 cups
sugar
1/2 cup
dark brown sugar (packed)
1 3/4 tsp
baking powder
1 tsp
baking soda
1 tsp
kosher salt
3
eggs
1 cup
buttermilk
1 cup
freshly brewed coffee (cooled and lukewarm)
1/4 cup
vegetable oil
2 tsp
vanilla extract
1 cup
salted butter, room temperature ((2 sticks))
4 tsp
vanilla extract
12
or 13 ounces store-bought marshmallow creme or fluff ((size varies by brand))
4 cups
powdered sugar (sifted)
1/2 cup
whole milk
4 tsp
light corn syrup
2 tsp
vanilla extract
6 oz
60% cacao dark bittersweet chocolate
1 cup
powdered sugar, sifted
2 tsp
whole milk
2 tsp
light corn syrup