Preheat oven to 325 degrees Fahrenheit and line a baking sheet with parchment paper or a silicone baking mat.
Mix all ingredients in a large bowl until well combined.
Pat dough onto the parchment paper or silicone baking mat 1/4 inch thick.
Place on baking sheet and bake for 10 to 15 minutes, until browned at the edges. Take a straight edge and cut the dough horizontally and then vertically to make a grid (I used a pizza cutter).
Break into pieces and refrigerate.
2 to 3 dozen treats