You could cut them to fit, yes there would be gaps, but, if you piped in a little ganache (smoke flavored?) and then pressed the marshmallow down, the ganache would rise up around the marshmallow. You could maybe soak graham crackers in heated cream like making cereal milk, and maybe add smoke flavor, then make a white chocolate ganache. -This way you wouldn't have to worry about the graham crackers getting soft.
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You could cut them to fit, yes there would be gaps, but, if you piped in a little ganache (smoke flavored?) and then pressed the marshmallow down, the ganache would rise up around the marshmallow. You could maybe soak graham crackers in heated cream (add smoke flavor?) and make a white chocolate ganache. -This way you wouldn't have to worry about the graham crackers getting soft.
