Put cookies, melted
butter, grated chocolate and chocolate chip cookies in a mixer jar and blend.
Transfer the mixture
into a cake tin and spread evenly.
Take cream cheese in
a bowl and whisk till smooth. Add sour cream and whipping cream and whisk. Slowly add eggs and whisk. Add Kahlua coffee liqueur and coffee powder and mix well.
Pour this mixture on
top of the crust in the cake tin. Place the tin in the preheated oven and bake for 2 hours.
Cool down to room
temperature and then chill in the refrigerator. Cut into wedges and serve.