Mix together 1/4 cup buttermilk, ... and 1 cup butter. Add in sugar, flour, baking soda and ... cool. Mix together peanut butter and salad oil. Spread ... it bubbles. Add powdered sugar, 6 tablespoons buttermilk and ... and spread over cake.
Ingredients: 16 (buttermilk .. cocoa .. flour .. oil .. soda .. sugar ...)