If you're adding toppings, prepare those first. And line a small baking dish with parchment paper.
Now over a double boiler melt the chocolate with the non dairy milk and ground cardamom (optional). Once it has melted add the coconut powder and whisk to well.
Add the chocolate mixture to the parchment paper and add another piece of parchment paper on top to spread it out.
Now add the toppings and use the other piece of parchment paper to press it all in.
Now put it in the freezer for 45 minutes and you're ready to have yourself a slice!
Enjoy!