Line a 9x9inch square tray with parchment paper and leave to the side
In a medium sized pan, add your small mars bar chunks, mini marshmallows and unsalted butter
Heat on a low heat, stirring frequently until the mixture has melted. At first it may look lumpy but after a while and a bit of beating it'll be smooth
Pour in the Rice Krispies/Coco Pops in to a large bowl then pour the smooth melted mixture on top
Mix together until all of the Rice Krispies are covered evenly- this can take a bit of welly but its worth it!
Press down into your tray evenly and then pour over some melted milk chocolate
Decorate with small pieces of chopped mars bar and sprinkles if you fancy
Leave the bars to set for a couple of hours, and then portion and enjoy.
Notes
This is a delicious treat that you can make with your kids - I like using mars bars, as they were a favourite treat of mine when I was little, but if you don't like them or can't get them then use 250g mini marshmallows, and 100g chocolate chips!
These last 2-3days in an airtight container!
You can make them into individual crispy cakes just as easily if you prefer!