01 -
Preheat oven to 350°F (175°C). Grease and line two 9-inch round cake pans with parchment paper.
02 -
In a large bowl, whisk together flour, cocoa powder, sugar, baking soda, baking powder, and salt.
03 -
Mix in oil, eggs, buttermilk, and vanilla until combined.
04 -
Slowly pour in hot coffee, stirring until smooth (batter will be thin—this is normal!).
05 -
Divide batter evenly between the cake pans and bake for 30-35 minutes, or until a toothpick comes out clean.
06 -
Let cakes cool in pans for 10 minutes, then transfer to a wire rack to cool completely.
07 -
In a bowl, beat butter until creamy.
08 -
Gradually add powdered sugar, cocoa powder, and salt, mixing well.
09 -
Pour in cooled coffee and vanilla extract, beating until smooth and fluffy.
10 -
Place one cake layer on a serving plate, spread frosting over it, then top with the second cake layer. Frost the entire cake.
11 -
Sprinkle with chocolate shavings, espresso beans, or a light dusting of cocoa powder.