4 overripe bananas, sliced
2 bananas, sliced, to serve
600g/1lb 5oz dulce de leche
60²µ/2¼´Ç³ú caster sugar
dusting cocoa powder
50²µ/1¾´Ç³ú icing sugar
1 vanilla pod, seeds removed
100²µ/3½´Ç³ú chocolate shavings
300²µ/10½´Ç³ú digestive biscuits
160g/5½oz melted butter
60²µ/2¼´Ç³ú butter
300²µ/10½´Ç³ú crème fraîche
300³¾±ô/½±è³Ù double cream