Divide the mixture into 3 parts and bake them into three separate layers in a baking dish with baking paper in a moderately hot oven for 30-40 minutes.
To prepare the cream, simply mix all the ingredients together. Stick the finished layers with cream.
Smear the top and sides of the cake with whipped cream and decorate with plenty of walnuts and orange slices.
Allow to cool for several hours before serving the Belgian cake.