Peanut Butter Dog Biscuits

1 1/2 cup whole wheat flour
1/2 cup soy flour
1 tbsp. baking powder
1/2 tsp. salt
1 cup peanut butter (sugar free; smooth or chunky)
3/4 cup milk

Preheat oven to 400 degrees. Combine wheat and soy flour, baking powder and salt in mixing bowl. In a separate bowl, whisk together peanut butter and milk until well combined and smooth. Fold peanut butter- milk mixture into dry ingredients and mix well to a soft dough. Turn out dough onto lightly floured surface; knead lightly. Roll dough out to 3/8 - 1/4 inch thick; cut into pieces 1-2 inches square (depending on dog's size). Place 1/2 inch apart on ungreased baking sheets. Bake 15 minutes or until lightly browned. Store cooled biscuits in refrigerator. Woof!