Melt 130 g chocolate and place in a bowl, melt the butter and add. Add the eggs and flour and mix everything together. Finally add the sugar and the chopped chocolate.
Spread the dough in a buttered and floured baking pan (24 cm) and bake in the oven preheated to 180 degrees for 15 minutes.
Let the cake cool down a bit, remove it from the mold and dust with powdered sugar.
The fondant will be crispier if you mix some broken meringue into the batter.