Chocolate Sponge Mix with Dark and Milk Chocolate Chips. Why not try Mr Kipling Signature Triple Chocolate sponge cake mix? Perfect for baking at home with family and for special occasions! Just add eggs, oil and milk to a jug, mix and then add to the indulgent cake mix. Gently mix then whisk for two minutes until you have a smooth and creamy texture (taking care not to over-mix). Pour evenly between two greased and lined cake tins, and bake in the centre of the oven for 24 to 28 minutes or until a skewer inserted into the sponge comes out clean. Once cooled, top with Mr Kipling Icing or serve with vanilla ice cream!. Top Tip! For a superior, rich finish, fill, top or glaze your cake with our exceedingly good signature chocolate fudge fill & glaze icing.