Quick and Easy Tomato Rice Soup 1 tbs vegetable oil 2 tbs flour 4 cups canned tomato sauce 1 onion, diced 2 cups cooked leftover rice Heat the oil in a large saucepan and brown the flour in the oil. Add the tomato sauce and the onion. Cook over low heat for 15 minutes.
Add the rice to the saucepan and continue cooking until the soup is thoroughly heated. Enjoy!