Preheat the oven to 350 F / 180 C.
Mix all dry ingredients (except water and oil) in a big bowl.
Add water and oil and stir to combine. The dough should be a little dry and crumbly. That’s ok, just use your hands to form a large ball.
Place the dough on a large sheet of parchment paper, then lay another sheet of parchment paper on top. Use a rolling pin to evenly roll out the dough into a thin rectangle/circle. (I actually skip the parchment paper and roll out the dough right on the counter, it doesn’t stick; but if you don’t want to risk it, parchment paper works great. Your call!)
Remove the top sheet of parchment paper (if using) and use a knife to cut the dough into small squares.
Use a spatula to transfer the crackers to a baking sheet (no need for oil or parchment paper, they won’t stick), make sure they are not touching each other so they bake evenly.
Bake for 12 – 15 minutes, until slightly golden. Remove from the oven, cool down and enjoy!
Store them in an air-tight container for up to 1 a week (though they are so good, they won’t last that long!).