Roughly chop the chocolate and melt over a warm water bath. Cream 250 g fat, 200 g sugar, salt and vanilla sugar with the whisk of the hand mixer. Stir in the eggs one after the other.
Mix 350 g flour, baking powder and cocoa and stir in alternately with the milk and chocolate. Pour into a greased springform pan (26 cm Ø) sprinkled with flour and bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see
manufacturer) bake for about 40 minutes. Take out and let cool down.
Knead 60 g sugar, 125 g butter in flakes and 175 g flour to a short pastry. Wrap in foil and chill for at least 30 minutes.
Peel and quarter the apples and remove the core. Cut quarter into cubes. Caramelise 50 g sugar in a pot. Add apples and 1 tbsp. lemon juice. Boil down at low heat while stirring to a compote.
Finally, stir in the sultanas, almonds and cinnamon. Pour into a bowl and allow to cool. Cover with foil and chill.
Roll out the short pastry on a floured work surface to a thickness of approx. 5 mm and cut out 4 fir trees (each approx. 6 x 12 cm). Place on a baking tray lined with baking paper. Insert the shish kebab skewers from the end of the stem towards the tip and bake in the oven (electric cooker: 175 °C/ circulating air: 150 °C/ gas: see
manufacturer) bake for about 10 minutes. Take out and let cool down.
Soak gelatine in cold water. Cut the vanilla pod in half lengthwise and scrape out the pulp. Whip cream until stiff. Stir mascarpone, 75 g sugar, vanilla pulp and 1 tbsp lemon juice until smooth. Gradually fold in the cream.
Squeeze out the gelatine, dissolve and stir in 4 tablespoons of the mascarpone cream, stir into the remaining mascarpone cream.
Carefully remove the base from the mould. Place on a plate and cut through horizontally 2 times. Spread half of the apple mixture on the lower base. Leave about 1 cm free to the edge. Spread half of the mascarpone cream on it v
Place the middle shelf on top. Do the same with the remaining apple mixture and mascarpone cream. Place the upper cake layer on top. Chill the cake for at least 30 minutes.
Leave 1/4 of the fondant white, colour the rest in 3 different shades of green. Roll out on a work surface dusted with icing sugar and cut into strips. Beginning at the end of the stem, always place 1 strip loosely over the biscuit and press on the back.
Proceed in the same way with all colours until all trees are packed.
Beat the egg whites until stiff, adding 100 g icing sugar. Add the remaining icing sugar and stir in. Spread the icing on the cake and chill for at least 30 minutes. Before serving, place fir trees inside.