Melt the chocolate with the butter. Mix well, then add the egg and the sugar and mix again.
Crush the biscuits in big pieces.
Add them to the chocolate mix. Put half of it on aluminium foil.
Wrap it up and close the edges, to make it look like a salami. Do the same with the remaining preparation. Put in the fridge for at least 2 hours.
Take the aluminium out of the salamis, then sprinkle with icing sugar. Rob it with your hands to make it stick.
There you are, your chocolate salami is ready!