Roughly chop the chocolate coating. Melt butter and chocolate coating in a small pot at low heat while stirring. Remove from the heat and let it cool down a little. In the meantime, whisk the eggs, sugar, 1 pinch of salt and vanilla sugar with the whisk of the hand mixer until thick and creamy (8-10 minutes). Mix flour and baking powder. Stir the butter and chocolate mixture into the beaten eggs. First stir in the flour mixture, then the crème fraîche with a mixing spoon. Pour the dough into a greased and flour-dusted springform pan (26 cm Ø) and smooth it down. Bake in the preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) on the middle shelf for approx. 45 minutes
In the meantime, stir the cream cheese and mascarpone with the whisk of the hand mixer until smooth. Stir in icing sugar and jam. Put them in a cold place
Remove the brownie from the oven, place it on a cake rack, remove it from the edge of the springform pan and let it cool in the pan for about 2 hours. Remove the cake from the springform pan and cut out 14 circles with a round cookie cutter (approx. 5 cm Ø)
Fill cranberry cream into a piping bag with a larger perforated spout and squirt about 2 cm thick onto half of the brownies. Place other brownies on top and spread the remaining cream on top. Decorate with mint as desired
waiting time approx. 2 hours