3 small just-ripe bananas, sliced
1 x 397g/14oz full-fat condensed milk (see tip)
75²µ/2¾´Ç³ú light muscovado sugar
1 tsp vanilla extract
50²µ/1¾´Ç³ú dark chocolate, melted or cocoa powder
150g/5½ oz digestive biscuits (about 10)
75²µ/2¾´Ç³ú butter
300ml/10fl oz double cream