Frosting for Petits Fours
A poured-fondant petit four icing that can be easily colored or flavored. Pour over petit fours, and then decorate them with sprinkles, rolled fondant flowers, whole nuts, candied fruit or coconut.
Before slicing the sponge cake into squares or diamond shapes, spread a thin layer of jam on the surface. Top with a paper-thin layer of marzipan or rolled fondant: this will give you a smooth surface for the poured fondant, and it will help keep the cake from crumbling when you slice it.