Preheat your oven to 350°F
In a bowl take your flour and your baking powder and whisk them together.
In the bowl of your stand mixer and or another bowl with a hand mixer, mix together your 2 eggs and sugar. You should let them mix for about 5 minutes, it should look like and fluffy like in the picture below.
While that is mixing, on your stove, place your chocolate and tahini in a pot. Melt them together. Once it becomes almost a thick syrup, it is ready.
Allow the chocolate and tahini mixture to cool.
Add vanilla to your egg and sugar mixture.
Add the flour mix and your chocolate tahini syrup and continue to mix until the dough comes together.
It is not a super thick batter, it is more like a loose brownie mixture. Use a ice cream scoop to place your batter on the tray.
Line your baking sheets with parchment paper and place cookies onto the trays.
Bake for 10 - 11 minutes. When done, allow to cool on the pan for 5-10 minutes and then transfer to a wire rack. Then eat up with a glass of cold milk or however you like :)