Place chocolate brew granules, cinnamon stick and vanilla bean into Thermomix bowl and mill 30 sec/speed 8. Scrape down sides of bowl and continue to blend 30 sec/speed 8.
The mixture will start to liquefy as the fat content from the chocolate will start to melt. At this point you can either add the cacao butter, or leave it out. I tried it both ways, but prefer it with the cacao butter.
Add remaining ingredients and blend 1 min/speed 8. Stop and scrape down sides of bowl as needed.
Press into mini muffin tin, tap to level and refrigerate. Push out and wrap in baking paper.