Here are a few nutrition snippets about the very popular banana(based on a 7" to 8" fruit)
105 kcals, 0.4g fat, 27g carbohydrate, 3g fiber, 1.3g protein
Besides potassium, they are high in: Vitamin B6, Vitamin C, Manganese, and Magnesium.
Click here for a full nutritional breakdown.
While bananas may be mostly carbohydrate, they do not contain more "sugar" than other fruits as so many of my clients/patients seem to think. All fruits are mostly carbohydrate, it really has to do more with how much a person eats at one time, and what they eat with it. At around 100 kcals per fruit, they sure beat the peel off any 100 calorie snack pack. Not only that, but their packaging is biodegradable!
Try bananas in oatmeal, cereal, yogurt, or on a grilled peanut-butter, banana, and chocolate chip sandwich for desert!