01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - Combine ground flaxseed with water in a small bowl. Allow to rest for 5 minutes until thickened.
03 - In a large bowl, whisk together melted coconut oil, light brown sugar, granulated sugar, plant-based milk, thickened flaxseed mixture, and vanilla extract until smooth.
04 - In a separate bowl, whisk all-purpose flour, baking soda, baking powder, and sea salt until evenly mixed.
05 - Gradually add dry ingredients to wet mixture. Stir just until incorporated. Avoid overmixing.
06 - Fold vegan dark chocolate chunks into the dough.
07 - Scoop 2-tablespoon portions of dough onto prepared baking sheets, allowing 2 inches of space between each.
08 - Bake for 11 to 13 minutes, or until the edges are golden and the centers appear slightly underbaked.
09 - Let cookies cool on baking sheets for 5 minutes, then transfer to wire racks to cool completely.