Grease a fat pan (deep baking tray; approx. 32 x 39 cm) and dust with flour. Peel and grate carrots and mix with 2 tbsp. lemon juice. Preheat the oven (electric cooker: 175°C/circulating air: 150°C/gas: level 2).
Whisk butter, sugar, vanillin sugar and salt with the whisk of the hand mixer for 3-5 minutes until white-creamy. Stir in the eggs one after the other.
Sift flour and baking powder over it and stir in briefly. Fold in all almonds and carrots. Spread the dough smoothly on the fat pan. Bake in a hot oven for 25-30 minutes. Let it cool down.
For the marzipan carrots and nests knead marzipan and 50 g icing sugar. Colour one half orange with food colouring, the other half green. Form approx. 24 carrots from the orange marzipan.
Form carrot green from some green marzipan and stick it to the carrots. For the icing, stir 350 g icing sugar and 6-8 tbsp lemon juice until smooth. Spread evenly on the cake and leave to dry.
Cut the cake into about 24 pieces. For the rest of the nests, press green marzipan directly onto the cake pieces using a garlic press. Decorate with marzipan carrots and sugar eggs.