Begin by placing the cacao butter in the top section of your double boiler. Fill the bottom pot with water and bring it to a gentle simmer. Allow the cacao butter to melt slowly, stirring occasionally until it becomes a clear liquid. This process usually takes around 5-10 minutes.
While the cacao butter is melting, combine the raw cacao powder (or cocoa powder), maple syrup (or coconut sugar), and sea salt in a separate bowl. Mix these dry ingredients well to ensure an even distribution of flavor.
Once the cacao butter is fully melted, remove it from the heat. Add the dry mixture to the melted cacao butter gradually, stirring continuously with your spatula. This will help to prevent any lumps from forming. Continue to mix until the mixture is smooth and glossy.
Carefully pour the chocolate mixture into your prepared molds. You can tap the molds gently on the counter to release any air bubbles. This step ensures your chocolate bars have a smooth finish.
Place the molds in the refrigerator for about 30-60 minutes, or until the chocolate has fully hardened. The cooling time may vary based on the thickness of your chocolate bars.
Once the chocolate has set, carefully pop the bars out of the molds. Enjoy your homemade dark chocolate bars as is, or store them for later!