Friends and family who would formerly never eat spinach absolutely love this quick and easy soup. Instant chicken noodle soup mix, frozen spinach, and a simplified white sauce are a dynamite combination. It can easily be made more rich by adding cream or extra eggs, thicker with additional flour, or lightened up with skim milk and omitting the egg. It's also been made with only one packet of soup and a little less flour, and you can be REALLY fancy and make a proper white sauce with butter, milk and flour if you have a lot of time. The proportions/recipe are very forgiving. The recipe originally came from a friend of my mother's in the 1980s, and we called it Swamp Soup when we accidentally used a package of frozen whole leaf spinach instead of the chopped variety!