This recipe is great for kids because it’s simple ingredients and very little process.
Combine the tomatoes, chicken stock, onion, celery, and carrots together in a large saucepot and bring to a boil. Boil for 15-20 minutes, or until the flavors have developed and the vegetables are cooking through and remove from heat. Add to a food processor, carefully, and purée. Pour the soup into a bowl, finish with butter, and garnish with olive oil, a couple of croutons, and Parmesan.