Preheat oven to 325°F / 160°C.
In a small bowl whisk eggs and vanilla extract together. Set aside. In a measuring cup, combine coconut sugar, baking soda, cardamom, and salt.
Measure out the tahini and place in a large bowl. Add the egg mixture, stir to combine, but don’t over mix. Add the coconut sugar mixture and fold together. The dough may be very thick - that’s okay. Add about half of the chopped chocolate, using your hands if necessary to incorporate.
Press the dough into a cast-iron skillet. Sprinkle the remaining chocolate over the top and press each piece slightly into the dough. Sprinkle with a couple generous pinches of flaky salt, and place in the oven.
Bake for 25-30 minutes until the top is golden brown and the edges have pulled away from the sides a bit. Remove from the oven and let cool slightly. Serve warm with ice cream if desired, or cold from the fridge. Say thank you and enjoy so much.