I found this recipe on Bullwrinkle.com. I have been using it for a little over a year and all our dogs love these cookies. I have received so many requests for the recipe that I am putting it here. It is so much cheaper than buying store bought and you know what is going into your dog's mouth (at least as far as the treats go ;0). I double or triple the recipe and then freeze the extra in freezer bags. They last for about three months.
PEANUT BUTTER PUPPY POPPERS
2 cups whole-wheat flour
1 TBSP baking powder
1 C peanut butter (chunky or smooth)
1 C milk
Preheat oven to 375' F. In a bowl, combine flour and baking powder. In another bowl, mix peanut butter and milk, then add to dry ingredients and mix well. Place dough on a lightly floured surface and knead. Roll dough 1/4 inch thickness and use a cookie cutter to cut out shapes. Bake for 20 minutes on a greased baking sheet until lightly brown. Cool on a rack, then store in an airtight container. This is the original recipe, but I have found the cookies burn easily.
I hope you enjoy these as much as we have!