1. Melt butter in large soup pot over medium to medium-high heat. Add bacon pieces and onions; saute until onions are cooked and bacon starts to brown.
2. Add broth, water, carrots, potatoes, and rice. Cover and cook on medium until rice is chewy and done (about 40-45 minutes).
3. Combine flour and non-dairy milk in a tightly sealed jar and shake well; add to soup. (If this is too thick at this point, add a bit more water.)
4. Add nutritional yeast.
5. Enjoy! Serves at least 6.