Prepare. Preheat your oven to 325°F. Also, prepare your baking sheets for nonstick.
Egg. To make the vegan egg, combine together the ground flaves and water. Allow the mixture to sit until it becomes gel-like (about five minutes).
Dry Ingredients. In a medium bowl, use a whisk to combine together the unsweetened cocoa powder, flour, ground cinnamon, and baking soda.
Sugars. In a large bowl, mix together the oil, sugars and vanilla extract until just combined. Then use a rubber spatula or similar item to fold in the flax egg mixture from the second step
Combine Add the dry ingredients from first bowl to the ingredients from the second bowl and mix until combined.
Chocolate. Lastly, use a clean rubber spatula to fold in the chocolate.
Bake. Use medium cookie scoop to scoop out the cookie dough, roll the dough between your hands into a ball, and then place the balls on to your prepared baking sheet. Bake the cookies for 12-14 minutes or until the tops begin to get crusty and the cookies appear to be set.
Cool. Allow the cookies to set on the baking sheet for 10 minutes before transferring them to a cooling rack to fully cool