Preheat oven to 350 degrees and line an 8×8 baking dish with parchment paper or grease with butter/coconut oil
Add all ingredients (except cacao nibs) to a large food processor or blender. Mix on high until smooth. Pour into prepared dish and flatten. Sprinkle on cacao nibs and shredded coconut if desired
Bake for 16-18 minutes. Cool, refrigerate to harden, and cut into equal pieces