Melt the chocolate with the coconut oil, either in the microwave or your Thermomix. It cannot go above 40°C in the Thermomix. It will take a good 7-8 minutes.
Dip the oreos in the chocolate and sprinkle them with the crushed candy canes. Set in the fridge. If you try and dip the oreos when the chocolate is still quite warm it will just run off, so let it cool so that when you stir it, it holds a shape slightly.
To crush candy canes, wrap an unwrapped candy cane or two in your Silpat bread mat and beat it up with a rolling pin or other blunt instrument. You will keep the pieces from flying all over your kitchen this way.