The reasons for this are as detailed in my post about peanut butter s'mores cupcakes, but I will reiterate them here. Whenever you search for a s'mores cake/cupcake recipe on the internet, everyone bakes chocolate cake! There's so much more to this flavor than chocolate. The chocolate is the most important part of a s'more, yet it is the tiniest part. S'mores cake layers consist of buttercream, marshmallow fluff, and chocolate Swiss meringue buttercream. The 7-minute frosting is also called meringue frosting, depending on your preference. The cake feels and tastes like an actual s'more, which is pretty simple if you ask me!