In a medium bowl mix together by hand the all-purpose flour, unsweetened cocoa powder, espresso powder, baking soda, baking powder and salt. Set aside.
1 cup All-Purpose Flour, 1/2 cup Unsweetened Cocoa Powder, 1 tsp Espresso Powder (optional), 1/2 tsp Baking Soda, 1/2 tsp Baking Powder, 1/2 tsp Salt
Using a hand/stand mixer with the paddle attachment on, cream together the unsalted butter, tahini, light brown sugar and granulated sugar on medium speed until smooth for 2-3 minutes.
1/2 cup Unsalted Butter, 3/4 cup Tahini, 1/2 cup Light Brown Sugar, 1/4 cup Granulated Sugar
Incorporate the egg, egg yolk and vanilla extract.
1 large Egg, 1 Egg Yolk, 1 tsp Pure Vanilla Extract
With the mixer running on low speed, add the flour mixture in thirds until there are no visible lumps. Do not overmix.
Remove the mixing bowl from the mixer and fold in the chocolate chips using a spatula. The dough will be thick and sticky. You may reserve a few chocolate chips for topping the cookies before baking.
6 oz Semi Sweet/Dark Chocolate Chips
Transfer the bowl with the cookie dough in the refrigerator for at least 1 hour if using right away or refrigerate overnight if baking later. Cover the bowl air tightly with plastic wrap.
Preheat the oven at 350°F (180C).
Line 2 large baking sheets with parchment paper and set aside.
Remove bowl with cookie dough from refrigerator and let it sit for 10 minutes on the kitchen counter.
Fill a shallow bowl with the sesame seeds.
5 tbsp Sesame Seeds
Use a large cookie scoop/spoon to scoop cookie dough. Roll the cookie balls in the bowl with sesame seeds coating all sides.
Transfer cookies onto the lined baking sheets leaving 2 inches space between them. Use your palm to flatten the cookie balls.
Press the reserved chocolate chips on top of the cookies.
Bake one pan at a time for 11 minutes until the edges of the cookies are set.
Remove from oven and let them sit in the baking sheets for 5 minutes before transferring to a cooling rack.
Sprinkle cookies with flaky salt for a nice salty kick.
Flaky Salt
Enjoy!