Chocolate Banana Corn Dogs

Name: Chocolate Banana Corn Dogs
Prep time: 30 min
Cook time: 40 min
Total time: 1 h 10 min
Yield: 4
Ingredients: 4 bananas; Wooden skewers; 200g dark chocolate; 125g yellow cornmeal; 175g plain flour; 45g sugar; 1 tsp kosher salt; 1 tsp baking powder; 1 egg; 230ml buttermilk; Icing sugar, to dust