Mix all ingredients to a doughy consistency.
Knead on a floured board until firm. Roll thin and cut into large diamond shapes. Sprinkle with sugar and prick with a fork.
Bake on a ungreased, floured baking sheet in a preheated 450° oven for 5 minutes. Turn off heat. If edges of crackers need more browning, leave the baking sheet in the oven for a few seconds after the fire is off.