Crush the rich tea biscuits in a bowl
Melt the butter and cocoa powder in a saucepan over a low heat
Add the golden syrup to the mixture and combine
Add the rich tea biscuits, marshmallows, sultanas and cherries into the saucepan, remove from the heat and combine
Pack the mixture into a traybake tray and push flat
Refrigerate for 3-4 hours, cut into slices and eat as a snack or dessert.