For those who want to try this at home...
Bake (or buy) delicious home made chocolate brownie.
Make chocolate buttercream icing.
Crumble the cake into the icing and mix.
Unwrap the creme egg.
Do not eat the creme egg.
Wrap the egg in a blanket of cake mix.
Pop in the fridge to set.
Cup of tea
Cover the egg/cake ball in melted chocolate, be warned this is very very messy.
Roll in crushed mini-eggs.
Try to hide it from your kids/ partner - the chocolatey explosion in your kitchen might be a give away though.
Create a diversion & eat while no-one is looking.