150²µ/5½´Ç³ú caster sugar
50g/2oz white chocolate, for grating, or icing sugar
sunflower oil, for greasing
300g/10½oz chocolate oat biscuits
Belgian chocolate truffles
200g/7oz dark chocolate, broken into pieces
50g/2oz butter, melted
500g/1lb 2oz full-fat cream cheese
3 large free-range eggs
200ml/â…“ pint soured cream