8 medium鈥搒mall ripe bananas
320g/11oz crunchy or smooth peanut butter
75驳/2鈪攐锄 caster sugar
陆 tsp ground cinnamon
240驳/8陆辞锄 dark chocolate, chopped
100驳/3陆辞锄 butter, melted
1 free-range egg, beaten
8 large flour tortilla wraps