This recipe from the Humane Society was my general inspiration, but I didn't follow it; instead, I used your basic chocolate cupcake recipe from VCTOTW. I used the large-sized, mini cupcake cups that just sit independently on the baking sheet; to give you an idea of the size, they are slightly too big to act as liners in a mini cupcake pan. Also, these cups kind of expand as you fill them. I poured the batter to the halfway point, then plopped in a piece of marshmallow (about 1/3*) and pressed it down.
Then I spooned just enough batter over each one to cover the marshie.
Once cooled, I warmed up my refrigerated icing: adding a bit more soy milk and vanilla. And, what do you know? The icing ultimately wound up quite ganachey, which was fine; I don't really like frosting anyway. But, I'm not at all sure how this happened. Nonetheless, I'm happy to chalk it up to "magic" (as I do with most math and science).
Once iced, I was afraid that the chocolate on chocolate cupcakes looked too blah. A neighbor
These were most impressive to look at, but- more importantly, they were totally scrumptious to eat. However, in an effort to achieve maximum marshmallow madness, I'd recommend making regulation sized cupcakes with a whole marshmallow inside. The marshmallows deserve it and so do you.
* When cut, the vanilla marshmallows get very sticky and hard to control