Break 150 g chocolate into pieces. Melt with 200 g cream in a pot at low heat while stirring. Put the chocolate cream into a mixing bowl, let it cool down and put it in a cool place for about 1 hour.
Place the paper baking cups in the wells of a muffin tray (12 wells) and preheat the oven (electric oven: 175 °C/circulating air: 150 °C/gas: see manufacturer).
Break 150 g chocolate into pieces. Melt with butter in a hot water bath at low heat while stirring and put into a mixing bowl. Let it cool down a little bit. Add sugar, 1 pinch of salt and eggs and mix.
Mix flour and baking powder, stir in briefly. Spread the dough into the moulds. Bake in a hot oven for about 20 minutes. Take the muffins out of the oven and let them cool down.
Break 125 g chocolate into pieces. Melt with 125 g cream and coconut oil in a hot water bath at low heat while stirring, let cool down for about 20 minutes.
Remove the muffins from the muffin cups and cut them horizontally. Whip the chocolate cream with the whisk of the mixer until creamy. Then spread loosely on the muffin bases. Place the muffin tops on top and spread the chocolate icing on top.
Cool briefly.