I typically use my favorite chocolate frosting; however my chocolate fudge frosting works just as well (and that's what I used in the photos here!). The fudge frosting is thicker, richer and, well, fudgier, while the “favorite” frosting is lighter, sweeter, and more buttercream-esque. I included a few additional ideas below if you are looking for more. Chocolate Swiss meringue buttercream, coffee frosting, or even Oreo frosting would also be good...so many options!