First of all, starting by preparing the mixture for the crêpes:
In a bowl, beat 3 eggs with a whisk and pour the milk slowly, then add the sifted flour in 2 times. Put it in the fridge and wait 30 minutes. Then butter a non-stick pan and make about 12 not too big crepes.
Later prepare the filling to make your cake very creamy:
Whip the fresh cream with the icing sugar and the seeds of 1/2 vanilla bean. Then add also some strawberries cut into small pieces, mixing from bottom to top, so as to avoid to disassemble the cream.
Now assemble the cake:
In a hinged pan lay a crepe on the bottom, sprinkle with some cream and then cover with another crepe. Keep doing this until you have finished all the layers. Finish with a crepe. Place the mountain of crepes in the fridge for about 30 minutes.
In the meantime prepare the chocolate ganache:
Cut the chocolate into small pieces, put it in a bowl and heat the cream in a saucepan, but do not boil it. Later, stirring, pour the cream into the chocolate and mix with a whisk so that the chocolate melts definitively.
In the end decorate the cake with the ganache, some chopped hazelnuts and, if you want, with some strawberries.