4 bananas, chopped and frozen
3 tbsp smooth peanut butter
30g/1oz plain flour
75²µ/2ΒΎ΄Η³ϊ breadcrumbs
125²µ/4Β½΄Η³ϊ caster sugar
200g/7oz dark chocolate, chopped
175g/6oz butter, plus extra for greasing
40²µ/1Β½΄Η³ϊ butter
3 large free-range eggs