Preheat the oven to 350℉ and grease or line a 9x5 loaf pan with parchment paper.
Put all the ingredients into a stand mixer bowl and beat for about 1 minute. Be careful not to overmix, however. Your banana bread may come out dense if you let it go too long. Everything should be well incorporated. Pour the mixture into the loaf tin, and decorate if desired.
Bake for about 1 hour, until a toothpick comes out completely clean when poked into the center. Leave the loaf to cool in the tin for about 10 minutes, and then turn out onto a wire rack.
When the loaf is cool, mix all the glaze ingredients together until well-blended and smooth. Then drizzle the glaze over the top of the loaf.