Roughly grate the marzipan. Stir with fat, sugar, vanillin sugar and salt until creamy. Stir in eggs one after the other. Mix flour and baking powder, stir briefly into the fat mass. Grease rabbit tins (tray with 6 cavities) and dust with flour.
Fill the dough into the troughs and smooth it down. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 15 minutes. Take out and let cool in the mould for about 10 minutes. Turn out onto a cake rack and let it cool down. Stir icing sugar, lemon juice and 1-2 tablespoons of water until smooth. Remove approx. 1 tablespoon of icing, colour pink and fill into a piping bag. Fill approx. 2 tablespoons of white icing into a piping bag. Stir the rest of the icing thinner with approx. 1 tablespoon of hot water and divide into three. Colour 1/3 pink and 1/3 yellow. Leave 1/3 white.
Fill approx. 2 tablespoons of white icing into a piping bag. Stir the rest of the icing thinner with approx. 1 tablespoon of hot water and divide into three. Colour 1/3 pink and 1/3 yellow. Leave 1/3 white. Cover rabbits with it and let them dry. Cut a small corner off each piping bag. Paint contours on the rabbits with the icing and put sugar pearls as eyes
waiting time approx. 2 hours