Preheat oven to 350 degrees. Line a large baking sheet with parchment paper and set aside.
In one medium bowl, whisk together the Tahini Side ingredients. In another medium bowl, whisk together the Chocolate Side ingredients. Set aside.
Using a stand mixer on medium speed, beat the butter, white sugar, brown sugar, and maple syrup until light and fluffy. Add the tahini and mix until combined. Measure the batter mix and divide in equal halves (should be about 210 grams per side). Add half of the wet ingredient batter to the Tahini Side dry ingredients, and the other half to the Chocolate Side dry ingredients.
Using a spatula or wooden spoon, mix the tahini side ingredients until a cookie dough is formed. Then, use the same utensil to mix together the chocolate side ingredients. Add chocolate chips to each side.
Form the cookies. Take about 1 tablespoon of dough from each side and use your hands to stick the two doughs together. Roll the doughl between your palms until a ball is formed. You may want to “encourage” a swirled zig-zag shape between the two sides.
When all the cookies have been formed, roll the top of the dough in sesame seeds.
Add the cookie dough balls to a large baking sheet lined with parchment paper, leaving 3 inches between each cookie. They do not spread much.