Preheat oven to 350.

Mix all ingredients in a bowl. Add a couple tablespoons of water if you need to so that you have a stiff dough. It should be a bit dry.

Turn it out onto a floured surface (it can be really sticky) and roll out to about 1/2 inch thick. Either cut it into pieces about 1 inch square for a bigger dog or 1/2 inch square for little ones…or use a cookie cutter.

Bake for about 30 minutes.