Preheat the oven to 350ยบ F and place parchment paper on a large baking tray. It is very important that it is large for the mixture to be evenly and thinly distributed, for the crackers to bake nicely. If you do not have a large tray, use two small ones and distribute the mixture twice.
In a large deep bowl, add all the seeds and spices and stir. Add the water and stir well again. Stir the mixture nicely so there are no seeds left at the bottom of the bowl.
Let it set for 10 minutes for the ground flaxseed and the chia seeds to swell and the whole mixture to thicken and make a "gel-like mixture".
Transfer the mixture from the pan to the prepared baking tray and distribute and level over the entire surface. My recommendation is to use a rubber spatula because it is easier to smooth and flat the mixture. The cracker mixture would ideally be around 5-6 mm.
Bake for 25 minutes. Remove from the oven and cut into small cubes (size is optional) You can use a pizza cutter or a sharp knife for cutting.Turn over on the other side to bake evenly and return to the oven for baking for another 15-20 minutes, or until they are completely baked and get a golden color. Baking time will vary from oven to oven so keep an eye on them and check that they do not burn.Leave to cool completely before storing in a container or consuming. You can store them in the refrigerator, in a closed container for up to 2 weeks.