Dehydrating food (bananas)

itsjustpaper28686

Anyone know the best way to dehydrate banana's? I tried it out a few weeks ago but they ended up tasting not so good.....do you add something on top before drying? (like sugar? or any other spice?) I'm confused. They definitely don't taste like when you buy them at the store. Also, how long do you recommend leaving them in the dehydrator? Thanks!!!