Preheat oven to 350 degrees F.
Spread flour on a baking sheet and bake for 5 minutes. Stir the flour and return to the oven for another 3-5 minutes. Cool completely before using.
For the Cookie Dough
In a small bowl, combine the ground flaxseed and water. Set aside for at least five minutes while you gather your other ingredients.
In a large mixing bowl, combine the solid coconut oil, cane sugar, brown sugar, and vanilla. Using a hand mixer or stand mixer, start on low speed and work to medium until combined.
Add the flaxseed water mixture and beat until just combined.
Remove the bowl from the stand mixer or remove the beaters from the bowl. The balance of the recipe will be combined with a wooden spoon.
Add the heat-treated flour and salt. Stir the dry ingredients together to combine them evenly.
Add the dark chocolate chunks and fold them to combine.
Enjoy immediately or refrigerate until ready to eat. Store in the refrigerator for up to 3 days