Preheat oven to 325 degrees fahrenheit and line a baking pan with foil.
In a large bowl mix all ingredients one at a time, kneading well after each addition.
Spread mixture into prepared baking pan 1/4 inch thick and bake for 25 to 30 minutes.
Once cooled take a straight edge and score the dough horizontally and then vertically to make a grid (I used a pizza cutter).