Start by preheating your oven to 350°F (175°C). Line a baking sheet with parchment paper or a silicone baking mat to ensure your cookies don’t stick and bake evenly.
In a large bowl, combine the tahini, brown sugar, and granulated sugar. Beat them together until smooth and creamy. Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract to infuse the mixture with a warm, aromatic flavor.
In a separate bowl, whisk together the all-purpose flour, baking soda, and salt. This ensures the leavening and salt are evenly distributed throughout the dough.
Gradually add the dry ingredients to the wet tahini mixture. Stir gently but thoroughly until just combined—overmixing can lead to tougher cookies. The dough will be slightly sticky but manageable.
Fold in the dark chocolate chunks, ensuring they are evenly dispersed throughout the dough for bursts of melty chocolate in every bite.
Using a tablespoon or cookie scoop, drop dollops of dough onto the prepared baking sheet, spacing them about 2 inches apart. To get the signature tahini swirl effect, lightly swirl a little extra tahini on top of each cookie dollop with the back of a spoon or a toothpick. This not only looks beautiful but intensifies the nutty flavor.
Bake in the preheated oven for 10-12 minutes, or until the edges are golden and the centers look set but still soft. Avoid overbaking to maintain that perfect chewy texture.
Remove from the oven and let the cookies cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely. Once cooled, enjoy your delicious Tahini Swirl Chocolate Chunk Cookies with a glass of milk or your favorite tea!