This was given to me as a recipe for Bliss Balls, to be chilled. As you can see from the video below, I freeze these because that taste reminds me of ice cream and is more chocolatey melting in my mouth. So try both versions.
Below the 2 recipe videos is a video of me describing what happened when I tested this out on my kids, and there is a useful discussion about The Replacement Kick. Enjoy!