7 frozen bananas, about 580g/1lb 4½oz, chopped into pieces
250g/9oz fresh or frozen blueberries
½ lemon, zest and juice
185²µ/6½´Ç³ú golden syrup
2 tbsp golden syrup
100²µ/3½´Ç³ú caster sugar
½ tsp ground cinnamon
1 tbsp cocoa powder
60ml/2fl oz coconut oil, plus extra for greasing
160²µ/5¾´Ç³ú roasted whole hazelnuts
pinch salt
160²µ/5¾´Ç³ú porridge oats