Melt butter, sugar and golden syrup together
Crush the biscuits
Mix the butter mixture and biscuits
Mix in the cocoa powder
225g of the cooking chocolate
Chop the pack of Rolos
Mix chocolate chips, Rolos, biscuit and butter mixture and melted chocolate
Press the tiffin mixture into the greaseproof paper lined cake tin
Cool in the refrigerator till set. 1-2 hours
Melt the remaining 75grams of chocolate and layer thinly on top
Top with sweets to decorate while the chocolate topping is wet.
Allow to set again for several hours or over night
Slice into 9 large pieces or more if you prefer smaller pieces.