Place butter and egg into a blender and blend it well for about 3 minuteS.
Add whipping cream, condensed milk, crushed biscuits, crushed nuts, sugar, coffee and coco powder(diluted with 1 tbsp warm water) and gelatine mixture into the blender and blend again for about 5 minutes.
Take a setting tray and pour this mixture into it.
Leave it in the refrigerater to set for about 10 - 12 hrs.