Peanut Butter and Banana Pupcakes (Dog Treats)

I adapted this recipe from "the poop pantry" http://www.thepoop.com/pooppantry/bananapupcakes.asp We took out the flour (because they say dogs are not supposed to eat wheat), and also removed the vanilla extract (she can't taste the difference so why add un-natural ingredients). I added peanut butter for extra flavor and protein. I usually halve the recipe so that it fills one mini muffin tin pan. You can freeze extras so you always have yummy treats ready!