Store tomato soup in an airtight covered container in the refrigerator for up to five days. This tomato soup also freezes very well and is perfect for single size servings. I always use my jumbo muffin pan and it makes the perfect serving size. Simply fill the pan with the soup and freeze. When frozen, pop out the frozen serving and put it in a zip-loc freezer bag. (Picture is from another soup. I ate the tomato soup to fast to freeze. Haha.)