01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a small bowl, combine ground flaxseed with water and let sit for 5 minutes until thickened.
03 - In a large bowl, whisk together flour, cocoa powder, baking soda, sea salt, and espresso powder.
04 - In a separate bowl, whisk coconut sugar, granulated sugar, melted coconut oil, non-dairy milk, vanilla extract, and the thickened flax egg until fully incorporated.
05 - Pour wet ingredients into dry ingredients and stir gently until just combined, avoiding overmixing.
06 - Gently fold vegan dark chocolate chips into the dough.
07 - Scoop approximately 2 tablespoons of dough per cookie onto prepared sheets, spacing them about 2 inches apart. Optionally, sprinkle with flaky sea salt.
08 - Bake for 11 to 13 minutes until edges are set and centers appear slightly soft.
09 - Allow cookies to cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.