Put all of the ingredients into your blender, and puree until smooth.
If it isn't at the thickness you want, add more nutritional yeast to thicken or water to thin. If you overdo it on the water and things start to taste a bit diluted, add miso, a teaspoon at a time, to bump the flavor back up.
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Notes
You can adjust the thickness of the finished product by using more or less nutritional yeast. More nooch yields a thicker gravy; less makes it thinner.This recipe multiplies beautifully, so feel free to double, triple, quadruple, etc, to fit your holiday cooking needs!Miso gravy will keep for up to a week in the refrigerator, so feel free to make this ahead!