Cut the chocolate into pieces and melt it on a hot water bath, let it cool down a bit. Separate the eggs. Beat egg whites in 2-3 portions until stiff. Mix butter, sugar and vanilla bean. Stir in egg yolks one after the other. Stir in cooled chocolate.
Add egg white to the chocolate mixture. Mix flour and baking powder. Sift the flour mixture over the baking powder. Fold in egg white and flour. Grease the house form (31 cm high). Fill in sponge cake mixture and smooth it down. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 55-60 minutes. Remove from the oven and leave to rest in the mould for 3 minutes. Carefully turn out onto a cake rack and let it cool down. Carefully cut the house horizontally once. Warm up the jam, stir well. Spread the bottom base with jam and put the top back on top.
Remove from the oven and leave to rest in the mould for 3 minutes. Carefully turn out onto a cake rack and let it cool down. Carefully cut the house horizontally once. Warm up the jam, stir well. Spread the bottom base with jam and put the top back on top. Cut the white chocolate coating into pieces. Melt in a warm water bath. Decorate the house with white chocolate, chocolate hearts, sugar pearls and chocolate sprinkles
waiting time approx. 2 1/4 hours