This banana cake is a delicious way to use up any leftover bananas you might have lying around. Banana cake Cook time: 1 hour Total time: 1 hour Serves: Serves: 12 Ingredients 450g overripe bananas 70g butter 175g granulated sugar 2 medium eggs, beaten 200g self-raising flour ½ tsp salt ½ tsp bicarbonate of soda