Commercial cheese crackers are okay sometimes, but nothing beats the ultra-cheesiness of these home-made cheese crackers. They are really easy to make, and completely addictive.
Heat your oven to 210°C (410°F) for a fan/convection oven, 230°C (446°F) conventional, gas 8. Roll out the dough as thinly as you can on a well-floured surface. Line a baking sheet with greasproof paper, and cut out your crackers with a cookie cutter. The crackers can be any shape or size you want. Use a toothpick or skewer to prick holes in each cracker, about 1cm (half an inch) apart. Lift up each cracker with a knife, and place them on the baking sheet. Bake for 12 minutes, until golden brown and slightly puffed up.
Allow to cool on a wire rack. In theory, these can keep for a few days in an airtight container. In practice, you probably won't be able to resist eating them all at once.
Just enough cold water to make the dough come together.