Spiced canelé

Bake the chocolate cake according to package instructions and allow to cool.
To make the marble glaze, place the chocolates in 3 separate bowls. Heat the remaining ingredients in the microwave or in a saucepan. Once hot, divide evenly between the dark, white and milk chocolate.
Pour a few tablespoons of each chocolate over the cake until all the icing has been used. Smooth using a palette knife.
Cook's note: This easy way of decorating a cake is always a showstopper.