Put broth and liver in a blender and blend until liver is liquefied.

Put all other ingredients in a bowl and mix it up.

Pour liquid into dry ingredents slowly until dough forms a ball. You may not need all the liquid or may need to add a little more broth.

Flour a flat surface and roll the dough flat. Use cookie cutters or just cut into squares and place on a cookie sheet.

Cook in a 350°F oven until brown and a little puffy - about 15-20 minutes.

Note: You can use any protein that you want, or even use peanut butter.