This is how I make it.

1/2 packet of rasberry lollies chopped up
1/2 packet of marshmellows chopped up
Some nuts of your choice
500g cadburies chocolate block melted
250g crunchie cadburies chocolate (I use mint)

Line slice tray with baking paper
put in lollies/marshmellows/nuts in the bottom
Pour melted chocolate
Put in fridge for 1 hour
Take out, slice and put in container in the fridge

Kids LOVE it