In a double boiler, melt together the cocoa butter and tahini.
Stir in vanilla and Swerve until fully combined.
Turn off the heat at this point.
Scoop one tablespoon of the mixture into each well of your silicone muffin tin, and put in the fridge for about a half hour to set up.
At this point, stir chocolate into remaining sesame mixture.
The residual heat should melt everything nicely.
Once the sesame mixture has chilled, scoop about a tablespoon of chocolate mixture on each one.
It'll be slightly more than a tbsp, so a little bit of finagling is necessary.
Or, you could just use a spoon and eat that part straight from the bowl.
I won't judge.
Chill the cups for another hour until everything is completely set.
Enjoy!