In a double broilers, melt 16 oz of unsweetened dark chocolate until completely smooth, stirring frequently.
When the chocolate has completely melted, add the mint (and moringa powder if desired), stir for 30 seconds, and then transfer to a baking sheet lined with parchment paper.
Smooth the chocolate mixture on the parchment paper so that there are no lumps or uneven areas.
Sprinkle the rest of the ingredients over the chocolate layer before it has melted.
Freeze overnight or until hard. When it has reached a firm consistency, break apart and enjoy!