Start by soaking your cashews. Place them in a bowl, then pour some boiled water over them and cover the bowl with a plate. Let sit for about 20 minutes.
In a large pot, sauté onion, garlic, celery, and carrot for about 10 minutes. Use water or vegetable broth to prevent sticking.
Mix in the thyme, nutritional yeast, salt, and pepper.
Mix in the the broth and rice.
Bring the broth to a boil, then reduce to low heat and simmer with the lid on for 40 minutes. Check to see if your rice is cooked. You want it to be almost completely cooked before the next step.
While your soup is cooking, drain the water from your cashews. Place the cashews and ¾ cups of water in a blender and blend until smooth.
Pour the blended cashew sauce into the soup after the rice has been cooked. Mix it in and cook for an additional 5-10 minutes, stirring occasionally.
Notes
Required cook time may vary slightly depending on what rice you are using. Most wild rice requires around 40 minutes of cooking, but this recipe will work if you adjust the cook time to be slightly longer or shorter.