1/2 of a small onion, peeled with ends chopped off
1-2 celery stalks, leaves attached if possible
1 large carrot
1 clove of garlic, peeled
1 (28oz) can diced tomatoes, with juice
1 (14.5oz) can diced tomatoes, with Italian seasoning
If you can your own tomatoes, feel free to use those instead and add the Italian spices.
Combine all ingredients in a blender. Blend on medium for a few minutes. If you like a creamier soup, add some milk. For those of you with a Vitamix, blend for 6 minutes (or until steam appears) and serve. If you do not have a Vitamix, blend until soup-like consistency and then heat on the stove top. And that's it! You're done. An incredibly simple soup in less than 10 minutes (prep & blending combined).
The thing I really liked about this soup is the flavor. The soup itself is a little thicker than most store bought canned soups, but the flavor is unbeatable.