For Cake: Combine flour, sugar and soda in a mixing ... set aside. Bring butter, water and cocoa to ... Filling: Stir together peanut butter and oil. Spread over ... buttermilk and cocoa powder in a medium saucepan. Bring ... heat. Add to powdered sugar with vanilla. Beat until smooth.
Ingredients: 16 (buttermilk .. eggs .. flour .. oil .. soda .. sugar ...)