Line a muffin tin with 9 to 12 muffin liners; set aside. In a medium bowl, add the dark chocolate chips. Place in the microwave for 1 minute; remove and stir. Microwave for an additional 30 seconds and then stir vigorously until completely smooth.

In another medium bowl, add the white chocolate chips. Place in the microwave for 1 minute; remove and stir. If needed, microwave for an additional 30 seconds and stir until completely smooth. (With white chocolate I usually only need 1 minute.)

In a small bowl, add the tahini, brown rice syrup or honey and a pinch of salt. Barely stir them together (Striations of the syrup or honey are a-ok!)

Add a scant tablespoon of dark chocolate to half the liners. Add a scant tablespoon of white chocolate to the remaining liners. Smack the muffin tin on the counter to even out the chocolate.

Using a fork, add little drops of white chocolate to the dark chocolate cups and little drops of dark chocolate to the white chocolate cups. Using a knife, run it through the drops, creating swirls. Move quickly because the chocolate will set (depending on how cold your house is).

Transfer to the freezer to chill for 5 minutes. Remove it from the freezer and add a teaspoon of the tahini mixture to each cup. Transfer back to the freezer to set for an additional 5 minutes.

I found that the marbled tops worked best to do them in small batches of 2 to 3 cups. So, top 3 of the white chocolate cups with a scant tablespoon of white chocolate. Add a few drops of dark chocolate to the surface of the white chocolate cups and run your knife through them, creating swirls. Repeat this process, working in batches of 2 or 3 cups, until you’ve created swirls in all of the cups. Give it a gentle tap on the counter to even out the chocolate and transfer to the freezer for 10 minutes to set. Keep in the fridge until you’re ready to serve.