Melt your cacao butter in a saucepan over medium-low heat.
Once fully melted, remove from heat then add the remaining ingredients.
Whisk until everything is smooth and well combined.
Line a small loaf pan with parchment paper.
Pour in your fudge mixture, level it out evenly, then sprinkle lightly with the seed mix if desired.
Freeze for 1 hour, or until the fudge is set but not completely frozen.
Slice into 1-inch squares and keep refrigerated or frozen (tightly sealed).