Preheat the oven to 200C/400F degrees.
Line a baking tray with greaseproof paper.
Place the dry ingredients in a bowl and mix well.
Add the Parmesan cheese and combine thoroughly.
Add the water and stir until you have a dough.
Place the dough on the greaseproof lined baking tray.
Use another sheet of greaseproof paper and place on top of the dough. Place your rolling-pin on this paper and roll out the dough to fit the baking tray.
Remove the top layer of greaseproof paper and score the dough with a knife, into squares. This will make it easier to cut the cooked mixture into crackers.
Bake for 30 minutes until firm and slightly golden.
Cut into squares.
Eat and enjoy!