1 large egg
75 ml (5 tbsp) vegetable oil
125 g (1/2 cup + 2 tbsp) golden caster sugar
3 bananas (sliced - ideally these need to be older, well-speckled bananas)
150 g (1 cup + 1 tbsp) plain (all-purpose) flour
½ tsp baking powder
½ tsp bicarbonate of soda
1 tsp ground cinnamon
40 g (7 tbsp) rolled oats
50 g (1 3/4 oz) dark chocolate (finely chopped)