This is a fantastic and quite healthy muffin. I prefer honey in this - though I know many vegans don't eat honey. It's also fine with agave nectar or turbinado sugar. This muffin is also a great base for adding in other healthy stuff. Try sneaking in some grated zucchini, using a ripe avocado in place of all or some of the oil, or pureed carrots with the mashed banana.