For the grits- In a small pot bring water to boil and following package directions. Whisk in the grits and whisk to avoid lumps.
Turn the heat down and simmer until cooked about 5-8 minutes.
Meanwhile in a skillet, saute the onions and garlic for 2-3 minutes until soften and add the mushrooms.
Keep the pan at medium high to brown the mushrooms.
Add the stock to the mushrooms and add the spices including the soy sauce/tamari, worcestershire sauce. Allow to cook for 1-2 minutes and then add the slurry to thicken the sauce.
Your sauce is ready when is it thicken and shiny.
When the grits are cooked, remove from the heat and add nutritional yeast and combine. Pour grits into a bowl and serve mushrooms on top.
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