In a small cup, mix the flaxseed meal and water. Let stand for 5 minutes to thicken.
In a large bowl, whisk the almond flour, coconut sugar, baking powder, cinnamon and salt.
Add the flax mixture and coconut oil , stirring until blended into a cohesive dough (you can also do this in a food processor).
Cover the bowl and chill the dough for 30 minutes.
Preheat oven to 325ºF and line a large cookie sheet with parchment paper.
Transfer the chilled dough to a large sheet of parchment paper; top with a second sheet of parchment paper. Using a rolling pin, roll the dough to 1/8-inch thickness.(not too thin--mine were actually between 1/8 and 1/4 inch).
Using a knife or pizza cutter, cut into 2.5-inch (6 cm) squares; transfer squares to prepared sheet.
Bake in preheated oven for 12 to 15 minutes, until golden brown (they will still look slightly soft--will harden as they cool). Cool on the pan 5 minutes, and then transfer to a wire rack to cool completely. Store in an airtight container.