I bake these muffins regularly and they're a fave of my kids (if fact i have a batch in my oven right now!). Sweetened with banana. No added sugar except depending on what kind of or if you add the chocolate chips. We always do cause my kids love them (we do dark chocolate) but I think this recipe would be just as good without and with nuts or something instead.
Even if you added traditional chocolate, since it's the only sugar in the whole recipe it'd be pretty minimal.
https://www.bakerita.com/chocolate-p...anana-muffins/