Cream butter or margarine. Add sugar and vanilla sugar little at a time.
Fill the dough into a round baking-form covered with baking-paper (paper that prevents sticking). Bake it in a preheated oven for about 60 minutes at 175C; cool.
Whip cream until stiff and put onto the cooled cake. Pour advocaat over it.
Decorate the torte with whipped cream and sprinkle it with the chocolate crumbs.