Step 1: In a small sauce pan, on low fire, melt the chocolate with the margarine and sugar.
Step 2: Then let it cool down for 10 minutes.
Step 3: At this point add the chopped hazelnuts, flour and eggs.
Step 4: Beat the mixture and don't let the eggs cook.
Step 5: When smooth put the batter in a baking tray with baking paper and in the oven at 180 C for exactly 20 minutes.
Step 6: Eat at room temperature with a dust of confectioners' sugar.