For true health dogs need REAL, Actual food. ( not processed)
They also need to have a healthy gut lining  (which is also the immune system), only Real food provides what they need for that to happen.
You may benefit from reading my first article Vegan-Dog -Diets if you haven’t done so already. this is a follow-up to that 🙂

Basic home-cooking guidelines:

Feed 3 percent of body weight, totally daily amount. But remember you can adjust this to suit exercise levels or breed or current weight or the temperature of the day. This is a guideline.
Smaller dogs would likely need 4-5 percent and bigger dogs sometimes only 2 percent – it depends on your dog not on what All dogs need. There is no’ All dogs’, everyone is slightly different.

Be aware of handling, cooling and freezing guidelines just as you would your own food.

Monitor your dog’s stool quality, nail hardness, gum and teeth issues and breath as guidelines as to the internal gut health of your dog. If they begin to display imbalances be prepared to add something to their diet, supplement or food type, to make a difference for them.

If you know how to create a complete protein using 2 different type of vegan protein sources then these could be used as well. As long as the dogs is digesting them both.
Otherwise use complete proteins Buckwheat or Quinoa cooked – dogs do not digest raw pumpkin and sunflower seeds very easily so these are not as good for them as complete proteins. Tofu is an option, but not the ideal option for dogs for the majority of meals. Perhaps feed it, organic and cooked, once a week.

Good plants for adding to a dog’s complete protein sources:
Strawberries, Apples, Celery, Cherries, Spinach, Blueberries, Raspberries, Kale, Courgette, Parsley, Banana, Cauliflower, Asparagus, Sweet Potato, Green Beans and even Garlic at safe doses/amounts (which would be roughly 1/3 teaspoon per 10 lbs and only if needed to improve gut and immune system health – which it does amazingly.)

Footnote
Don’t panic! As you will have understood from the previous article No processed dog food is actually Complete – simply by feeding real actual food you are already giving more nutrition than you were before! Balance happens over time not in every bowl! Thats how nature works.
and don’t forget you have been eating this way since you were born, our diets are very rarely ‘controlled to be balanced’. Have fun and enjoy learning about your dogs likes and dislikes.

Another footnote: It is now possible to buy Bone Broth powder. This is not only amazing for the digestive system health but to some it may not be as meat-like as actually feeding meat.
If you can bring yourself too, then consider adding this to your dog’s meal, using it like a gravy type ingredient.  This of course depends on how vegan you are, this may be a great choice for some vegan people who want to do mostly vegan and then add an easy to use level of meat protein for their too.