Recipe VIDEO above. The classic, iconic Red Velvet Cake! The sponge is soft and velvety, true to it's name, with a buttery flavour, moist with a hint of chocolate, vanilla and tang from buttermilk. MEASURES: Don't switch between weights/ml and cups in the recipe, read note 11. UK: Please read notes 7 and 9. After Red Velvet Cupcakes? Here's the recipe!