My husband is a FIEND for these things, and I wanted to make him an actual cake that tastes similar for Father's Day. The cake part and the marshmallow I think I have got under control, but I am not sure what I would do about chocolate? Buttercream seems too heavy, and I am not sure how to accomplish a good texture using only chocolate. Any ideas? Thanks in advance!
what about ganache?
i am thinking of the same "moon pie" you're talking about??!!
probably the same one. the little snack cakes? maybe it's just a southern thing?
I definitely agree that ganache would be perfect. Moon Pies are SO yummy, and your hubby is going to be so excited about your creation!! 
Here's a good recipe for ganache, in case you don't already have one: http://www.joyofbaking.com/ganache.html
Another vote for ganache - but maybe made with a sweeter chocolate?
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