2c onions, chopped
2c water (plus some to de-glaze onions)
3c chopped or sliced mushrooms
2T minced garlic
1t soy sauce
1T nutritional yeast
As they brown to the bottom of the pan de-glaze with small amounts of water and use a wooden spoon to lift the browned onions from the bottom of the pot. This will add lots of flavour to the gravy.
Add the cornstarch to 1c water and mix.
Add all ingredients to the pot, bring to a boil then simmer for 30 minutes.
Serve over Seitan or mashed potatoes.