Step 1
Butter and line individual cubes/rectangles. In a saucepan melt the butter, sugar, syrup/honey and cocoa. Then stir through the biscuits and raisins after melted.
Step 2
Spoon the mixture into the separate rectangles and press down until smooth. Microwave both chocolates in short 20 second bursts, stirring frequently until melted. Spoon them over the mixture in the rectangles, try to get them as even as possible.
Step 3
Put the tin in the fridge and leave to set for about 2 hrs to set, or overnight.
Step 4
Pop the set tiffins out of the mould and enjoy