Chocolate and the butter melted in a water bath. After cooling it to add the beaten eggs with the sugar, flour and vanilla. Oblong pan is stood with paper and smeared with butter. Pour dough and equalizes with a spoon. Bake 30-35 minutes at 180 C. The glaze is prepared by the butter was melted and to this was added powdered sugar and brandy. Mix - A loose oil mixture. Slightly cooled down base is coated with glaze and sprinkle with chopped walnuts. Cool at least 2 hours. Serve cut into small pieces.