01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, cocoa powder, baking soda, and salt until evenly distributed.
03 - In a large bowl, whisk tahini, melted coconut oil, and sugar until smooth and thoroughly combined.
04 - Stir in non-dairy milk and vanilla extract until incorporated.
05 - Add dry ingredients to wet mixture and stir until soft dough forms.
06 - Scoop tablespoon-sized portions, roll into balls, and coat each ball in granulated sugar.
07 - Place cookies on prepared baking sheets, spacing 2 inches apart. Gently flatten each ball with fingers or glass bottom.
08 - Sprinkle with flaky sea salt if desired.
09 - Bake for 10-12 minutes until set at edges but still soft in center.
10 - Let cookies cool on baking sheet for 5 minutes, then transfer to wire rack to finish cooling.