100²µ/3½´Ç³ú chocolate hazelnut spread
40²µ/1½´Ç³ú plain flour
25g/1oz caster sugar
small handful flaked almonds
1 tbsp icing sugar, sifted, plus extra to serve
1 vanilla pod, split and seeds scraped
100²µ/3½´Ç³ú dark chocolate
25g/1oz unsalted butter
50ml/2fl oz double cream
150ml/¼ pint double cream
1 large free-range egg, beaten
1 free-range egg yolk