Add the digestive biscuits to a plastic bag and seal so none escape.

Using a rolling pin or hands crush up the biscuits in the bag, but not too fine leaving some small chunks.

Melt the chocolate, butter and golden syrup in a heatproof bowl over a pan of simmering water. Stir until all ingredients are melted.

Remove the bowl from the heat and stir in the broken biscuits and raisins(optional).

Using some more butter grease a baking tin and spoon the chocolate mixture from the bowl into it. Level out using the back of a table spoon.

Allow to cool for a few minutes then decorate with chocolate buttons, chocolate chips, mini Marsh mallows etc.

Leave to cool in the fridge for 1 to 2 hours.

Slice, serve and enjoy:)