The following is a recipe from my friend MJ. She makes these for all sorts of dog rescue fund raisers. My dog goes nuts for them. They are very rich though, and also need to be refrigerated or frozen (if not to be used within a week or two). They are very rich so one cut into a cookie size should probably be broken into parts. Maybe not exactly what you are looking for but I thought I would share.
Her write up:
Liver Brownies 325 oven 20-25 minutes baking time
1 pound of chicken livers pureed
1 egg
1 cup flour
1/2 cup corn meal
a shake of garlic powder
a pinch of salt
Using a food processor puree the chicken livers. Add the rest of the
ingredients and process. It will be the consistency of cookie dough.
Line a cookie sheet with parchment paper and spread out the mixture.
Bake at 325 for 20 to 25 minutes. Place on a rack and cool. Cut up
with a pizza cutter and pack up in snack bags and freeze. Keep frozen
until needed.
Variations:
Can use beef liver, but then you have to cut it up in pieces before
processing.
Instead of using liver you can use canned salmon, tuna or sardines. My
dogs like the salmon the best.
Venison liver works also, but I worry about CWD.
A friend with a much larger dog bakes her dough in muffin tins. She
found that a 1/2 muffin works best with her dog.
You could spread the mixture over a well greased cookie sheet, but
clean up will be ugly. Parchment paper is so much easier.
You can use fresh garlic, but then you will have to open every window
in your house because you will gas yourself out of your house.
Also, the following site has a lot of options:
http://www.all-natural-dog-treat.com/ho ... cipes.html