Coat a big soup pot with olive oil, and set to high heat. Then throw in some chopped onion and season with salt and pepper. Saute for a few minutes.
Add 2 chopped carrots and saute another few minutes.
Next, add 6 cups of vegetable broth and cook until the carrots soften.
Stir in 2 chopped yellow squash and 2 chopped zucchini. I quarter them so they're bite-sized!
Toss in the can of peeled crushed tomatoes and the bag of frozen cut string beans.
While the veggies soften in the vegetable broth, make 1 cup of lentils (follow instructions on bag).
When the lentils are finished, add them to the soup. Season with salt and pepper.
Simmer for about 30 minutes so all of the veggies have a chance to soften and the flavors mix together.