In a pot over medium heat, add the yellow onion, sweet potato, carrot and celery. Add a tablespoon of vegetable broth or oil, and saute until the sweet potato is softened slightly, at least 5 minutes.
Stir in the garlic, paprika, black pepper, thyme and nutritional yeast. Saute for an additional 7 to 9 minutes, until the vegetables are almost completely cooked. Add the wild rice and stir.
Add the vegetable broth and chickpeas. Bring the soup to a boil, then lower the heat to medium, and simmer covered for 30 minutes, until the rice is cooked.
Add the kale and the cashew butter, tahini or coconut milk to make the soup creamy, as desired. Taste and adjust seasonings as needed. I like to finish off mine with a squeeze of lemon.