I saw this coupon and it reminded me of something one of my Besties showed me, instead of using chocolate bars on s'mores, she spreads Nutella. I tried it and it's delish, it's sweet but it's not chocolate overload like you get when you use half of a hershey bar. I have not compared calories or sugar but I'm guessing a thin layer of Nutella is going to be less than regular chocolate.
Here's a printable coupon for marshmallows if I got you thinking about s'mores. I know, just what you need, you're trying to eat healthy and then I get you thinking about s'mores.