Here's another frosting idea. Get a jar of Artisana Coconut Butter. Heat until soft and add melted baking chocolate, a smidge of vanilla, and a pinch of salt. Mix and let cool. It has a perfect frosting texture.

I use 1bar minus 3 rows of Green and Blacks baking bar to one jar of coconut butter.

It would also make a lovely truffle substitute. Once cool it could probably make into ball shapes very well to be rolled in coconut or something. It seems to hold its shape pretty well at cool room temperature.