Mix all ingredients together until you can form a ball, adding more water if too dry.
Roll out a portion of the dough (either 1/2 or 1/3) between 1 piece of parchment paper (bottom) and on piece of wax paper. Dough is sort of sticky. Use a rolling pin or glass to roll because you want to get it really thin before baking – about an 1/8 of an inch.
Remove the top piece of wax paper.
Take a pizza cutter and score rectangles on the dough.
Place dough/parchment paper on a cookie pan in oven for 15 minutes, then check and bake for 5 minutes more. You may want to continue to bake and check every 5 minutes until the crackers are lightly browned. Total time is around 25 minutes depending on how thin they are.
Place the crackers still on the parchment paper on a cooling rack to cool.