Ingredients:

30 normal-sized Mars bars
800g milk chocolate
400g brown demerera sugar
150ml water
20g butter
2 egg whites

Step 1: The usual chocolate melting malarkey. Pour a thinnish layer into the tin and whack it into the fridge.

Step 2: Make the caramel. This can (and did many times) end in tears of brittle burnt toffee, even though all it takes is heating the sugar, water and butter - fellow snack-pimpers beware of heating it too long! Alternatively, the thinking person's solution would probably be to buy some toffees and melt them, but we wanted this pimp to be effort-filled.

Step 3: Allow the caramel to cool and pour onto the chocolate. Re-fridge it.