What vegetarian dog food would you recommend?

I understand dogs are not exactly meant to be vegetarian, but i am vegan and also want my dog to be at least vegetarian. What brand of food would you recommend? I have seen Natures Best and AvoDerm brands, but I would like recommendations from people who HAVE used the food or are vets and know a lot about nutrition for dogs. I am not trying to "force it" on the dog. I feed her Science Diet but I want to also use vegetarian food because I feel guilty buying meat even though I don’t eat it.