Unwrap the Easter Egg and place it on a large dinner plate or tray. If you buy Cadbury Easter Eggs they are already split in half so save a lot of mess and hassle trying to split the egg.
Crush the biscuits into crumbs - place the biscuits into a small bag and break them up using a wooden spoon or rolling pin. You don't want any big bits but be careful not to split the bag or the biscuit crumbs will go everywhere. Alternatively, you can use a blender.
Melt the butter in a small pan over a low heat, when melted stir in the biscuit crumbs. Spoon half of the mixture into each of the chocolate egg shells.
Using a hand mixer, whisk the cream until it forms soft peaks. Beat in the cheese and then stir in the icing sugar - do this carefully as the icing sugar will go everywhere if you are too rough.
Spoon the mixture into the chocolate shells and put in the fridge to set - allow at least 2 - 3 hours for this.
Decorate your eggs as you wish. I used whole and crushed Mini Eggs and a Mini Malteaster Bunny on one egg and Milk Chocolate Buttons and a Mini Bunny on the other.