In the order listed, add 1 1/4 cup water, soy sauce, nondairy butter, garlic, onion, mushrooms, safe, rosemary, pepper and white beans to the Instant Pot Ace blender. Pour the remaining 1/4 cup water over everything.
Choose the #1 soup function (20 minutes).
Once done, remove the lid and add 1/4 cup nutritional yeast flakes. Cover and pulse for about 8 to 10 seconds (you want it to thick and creamy but slightly chunky.)