Even a three year-old could.
(But SHOULDN'T given the fact that the marshmallows need to be TOASTED)
But when it's raining out and you're really hungry and are craving the ooey-gooey-ness of marshmallows with the sweet tang of chocolate, the crisp bite of crackers and the saltiness of some quality nut butter, Here's a fail-proof pick-me-up.
You could try to mix things up a but and try almond butter.
Or Nutella-double chocolately goodness.