Preheat the oven to 170C.
In a food processor or blender, blend the oats to a fine flour. Pour oat flour into a bowl and then add in salt, flour, flax seed, thyme, garlic powder, and seeds. Stir to combine.
Then add in the water and olive oil. Fold with a wooden spoon to become a dough, then use your hands to bring it together. If the dough feels too dry, add 1 Tbsp water at the time. Tip out onto a lightly floured surface and knead for 2 mins until it is smooth.
Cut the dough into two even pieces and then using a rolling pin to roll them out to 2mm thickness. Cut into desired shapes and place on a lined baking tray. Bake in the oven for 10-12mins. Dust with sea salt.