Crush 14 marie biscuits and combine the crumbs with melted butter.
Pour into the springform pan and press down gently with a spoon and place it into the fridge.
Place heavy cream and sugar in the bowl and whisk until soft peaks.
Then add mascarpone cheese and fold it gently until everything is well combined.
Pour half of the cream mixture into the springform pan over the crumb crust.
Spread half of the melted dark chocolate over the cream mixture and spread it.
Arranging the rest of the marie biscuits to form the second cookie layer.
Pour the rest of the cream mixture and melted chocolate.
Dust the top of layer with cocoa powder and refrigerate for at least 4 hours or overnight.