Melt the butter and let it cool down. Sift 250 g icing sugar. Mix eggs and vanillin sugar with the whisk of the hand mixer, adding icing sugar by the spoonful until the mixture is thick and foamy. Slowly add liquid butter and egg liqueur and stir in. Mix flour, starch and baking powder, sieve over it and fold in. Grease a deep glass baking tray (approx. 29 x 36 cm) and dust with flour. Add the dough and spread evenly. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 30 minutes. Let the cake cool down on the baking tray (at least 2 hours). Sieve 40 g icing sugar and knead with marzipan. On a work surface dusted with icing sugar, roll out 3-4 mm thin and cut out a gable 11-12 cm wide and 26-27 cm high. Heat the jam, pass it through a sieve and spread it on the marzipan gable. Place the jam side down in the middle of the cake. Coarsely chop the dark chocolate coating and 1/2 cube of coconut oil and melt over a warm water bath while stirring. Put approx. 2 tbsp. chocolate coating into a piping bag, cut off a small corner and paint the outline of the roof on the cake and the sides of the gable. Leave in a cool place for about 10 minutes. Pour the rest of the dark chocolate coating, except for about 4 tbsp., onto the cake and paint the roof with it. Sprinkle with chocolate sprinkles. Coarsely chop the white couverture and remaining coconut oil and melt over a warm water bath. Cover the lower half of the house and gable with the white couverture (possibly leave 1-2 tbsp. to stick on the sugar decoration). Put the cake in a cool place for about 1 hour. Warm up the remaining dark chocolate coating again, put it in a piping bag and cut off a small corner. Paint windows and doors on the house. Paint tendrils and flower stems with green sugar writing and decorate the house with sugar flowers, leaves and figures. Glue these on with a little white or dark chocolate coating. Let it dry in a cool place
waiting time approx. 3 hours
Tip: Is still juicy even after 2 days due to the chocolate icing!