Preheat oven to 400 degrees Fahrenheit and line a baking sheet with parchment paper or a silicone baking mat.
In a large bowl mix all ingredients one at a time, kneading well after each addition.
Form dough into a flat logs about 5 inches wide and 1 inch high.
Bake on prepared baking sheet for 10 minutes.
Remove from oven and allow to cool for 10 minutes then cut log into 1 x 1 inch squares.
Place squares back onto baking sheet and bake for 15 minutes, until the pieces are dry and crunchy.
Cool and refrigerate.