In a small bowl combine the Lily's chocolate chips and 1/2 tsp of coconut oil.
Microwave on high for 30 seconds at a time until the chips are melted. Be sure to stir in between each blast of 30 seconds because it may look as though the chips are still solid but will melt together once you stir them. It will be very important not to burn them. Once you overcook the chocolate it will not be useable. This process should only take a minute or so to fully melt the sugar free chips.
Use a spoon and drizzle chocolate into the chocolate bar mold. Be sure to spread the chocolate evenly and tap the mold on the counter so it levels out. Leave enough space to add the chopped sugar free peppermint candies at the top.
Place the sugar free peppermint candies in a small baggy and use a rolling pin or a meat tenderizer to crush or chop the peppermint into small pieces.
Sprinkle a layer of chopped sugar free peppermint candy over the top of the chocolate bar while the chocolate is still warm. It will sink into the chocolate a bit and hold it together. Add as much or as little as you like.
Place the chocolate bars in the refrigerator for at least 30 minutes to harden or you can place them in the freezer for about 10 minutes to get them to harden and set fully.