Melt the chocolate in the microwave or over a bain marie (bowl laid on top of a pan of simmering water). If you're using a microwave, do it in short bursts or depending on the chocolate you use, it could separate or burn.

Add the butter and stir it into the chocolate until it is melted. Then add the golden syrup.

Add the rice krispies and stir them on gently enough so as not to damage or break the krispies.

Fold in the tiny pieces of mars bar. They will semi melt into the mix as it will still be hot at this stage.

Pour into 20 cake cases and top with sweeties to decorate, leave to cool and then just eat.