In a small bowl, combine coconut sugar with ground cinnamon, mixing thoroughly. Set aside.

In a large mixing bowl, whisk together the whole grain flour and flax meal, if using. Gradually add water, stirring until a cohesive dough forms.

Place the prepared dough between two sheets of parchment paper, rolling it out to a thin layer approximately 1/8-inch thick.

Carefully peel off the top layer of parchment paper, then brush the rolled-out dough with aquafaba or a splash of water. Sprinkle the cinnamon sugar mixture over the surface.

Using a sharp knife or pizza cutter, slice the dough into squares measuring ½ to ¾ inch. Bake in an oven preheated to 350°F for about 10 minutes, or until golden brown and crispy.

Once baked, remove the tray from the oven and let the pieces cool completely on the baking sheet.