Let the raspberries thaw. Soak gelatine in cold water. Roughly chop 200 g of chocolate coating, melt over a warm water bath, add 150 g of liquid cream, stir until smooth. Squeeze out the gelatine, add it and dissolve in it.
Let it cool down a little. Whip 150 g cream until stiff and fold in. Mix raspberries with jelly.
Rinse out a box mould (approx. 10 x 25 cm), line with foil. Spread raspberries evenly in it, spread some chocolate cream on top. Place the lady fingers on top, add the rest of the cream and smooth it down.
Cover with foil and leave to cool for at least 5 hours.
Grate the rest of the chocolate coating. Take chocolate lasagne out of the fridge just before serving, remove foil, turn out on a plate and remove remaining foil. Sprinkle with chocolate shavings and cut into slices.