I am looking for a frosting recipe to compliment a devil food chocolate cake that will be covered in marshmallow fondant. Can you help me find a nice compliment?

there is a recipe on here for Nutella Buttercream. I used it to ice a devils food cake. tasted great. all though i added a bit more Nutella than the recipe called for.

Will this taste more like a chocolate peanut buttery frosting?