Place a bar of chocolate in a pyrex dish or stainless pan lined with parchment. (The size of the pan affects the size of the chocolate bar.) Place in a hot oven at about 350 F for 5 minutes or so until melted. Remove from oven. Stir in other ingredients. I use monkfruit crytals. Let cool, chill about 20 minutes to 1 hour, then score. Place back in fridge; when it is solidified break up the pieces.