For the cake, you'll need flour, cocoa powder, chocolate, sugars, espresso powder, baking powder, milk, yogurt, hot coffee, oil, eggs, and vanilla.
For the frosting, you'll need peanut butter, butter, powdered sugar, and heavy cream.
Make the cake
Make the cake batter, pour into a square pan, and bake at 350 degrees F for 20 minutes.
Make the frosting
While the cake cools, make the peanut butter frosting.
Frost the snack cake as desired.
Serve with a large glass of milk!