My Soft Chocolate Icing is an icing that you cook. This frosting isn’t as sugary sweet as a typical buttercream variety, but utterly delectable.
Mix the cornstarch with the water to form a thick paste. Cook this with the milk, sugar, and cocoa until it thickens nicely so it will spread.
Take this off the heat and then add the oil and stir in the margarine to melt through before adding the vanilla.
Cool and spread on your cake.
You will be able to frost a layer cake or a big sheet cake.