You've got the right idea! I would be careful with the davinci syrup though. May make the consistency too runny for baking them later. if you want the flavoring, just use a tbsp. Or you could opt for extracts...like orange..which is yummy with chocolate, or just vanilla...which I think makes chocolate taste really good! Another option, besides muffin cups...and easier I think, is to spread your chocolate mixture on some wax paper, or parchment paper that has been placed on a cookie sheet. then you can spread it out as thin or thick as you want. Then after you freeze it, just crumble it up! Also the cream will help to take the edge off the unsweetened chocolate. Adding a tiny bit of wax may help it to hold up to the baking too, just a thought. You can generally find the candy making wax in the baking aisle.

Rachel