FitDay lists a cup of French onion soup as having about 58 calories and less than 2 grams of fat. Now, whenever I have ever seen French onion soup, it's had bread in it and it's covered with melted cheese. FitDay doesn't list any ingredient for FOS. Any change that fat and calorie count might possible be for the bread and cheese too? Even as I write this, I realize it's wishful thinking.