6 apples (Cox or Granny Smith), peeled, quartered and cored
2 tbsp stewed apple, or sweet apple sauce
2 tbsp caster sugar
1 tbsp icing sugar
1 vanilla pod, seeds scraped out
40驳/1陆辞锄 butter, cubed
250ml/9fl oz double cream
1 free-range egg yolk, beaten
200g/7oz ready-made puff pastry
splash calvados