Preheat your oven to 375°F (190°C).
Put all ingredients into a food processor or high-powered blender and blend until mostly smooth and sticky like cookie dough. A few rice grains or cheese bits are perfectly acceptable.
When the dough appears too wet you can either spread it out on a tray to let it dry or put it in the refrigerator for a short time. Additional arrowroot or some extra starch dusted on a floured surface will help if the dough feels too sticky or too wet.
Wrap the dough between two sheets of parchment paper. Use a smooth can or rolling pin to flatten it out to about 1/8 inch (nickel thickness).
Remove the top parchment layer and use a pizza cutter or knife to cut the dough into squares.
Pro Tip: Sprinkle some toppings like flaky sea salt, sesame seeds or a dusting of chili powder on top before baking.
Place on a baking sheet and bake for 15–20 minutes, flipping the pan halfway to ensure even browning.
The crackers will harden when left to cool on the baking sheet so you can break them apart when done.
The crackers will keep for 5–7 days when stored in an airtight container at room temperature.