Chop whole milk chocolate and melt over a warm water bath. Cream butter, 150 g sugar, salt and vanillin sugar with the whisk of the hand mixer. Stir in the eggs one by one.
Stir in chocolate. Mix flour and baking powder, stir into the buttercream. Line the hollows of a muffin tray with paper cups. Spread the dough evenly in them. Press 1 sweet per muffin into the dough, bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see
manufacturer) bake for about 30 minutes. Take out and let cool down.
Soak gelatine in cold water. Coarsely chop white chocolate. Heat 50 g cream, remove from heat and melt the white chocolate in it, let it cool down. Stir mascarpone, 2 tablespoons sugar and liqueur with a whisk until smooth.
Stir in chocolate. Whip 100 g whipped cream until stiff, squeeze out the gelatine, dissolve and stir in 4 tbsp. of the mascarpone, stir into the remaining mascarpone, fold in the cream and chill until the cream starts to gel.
Remove the muffins from the cups. Pour mascarpone cream into a piping bag with a large star-shaped spout, and squirt a tuff onto each muffin. Melt dark chocolate over a warm water bath.
Decorate muffins with broken bark chocolate and liquid chocolate.