Heat oil in large saucepan or stockpot over medium high heat. Add onions, carrots, celery and turnips and sauté until softened, about 10 minutes.
2 tablespoons olive oil, 1 cup chopped onion , 1 cup chopped carrots, 1 cup chopped celery, 3 cups cubed peeled turnips
Add broth, tomatoes, water, thyme, salt and pepper. Bring to a boil. Reduce heat, cover partially, and simmer for 15 minutes.
5 cups low-sodium vegetable broth, 1 can (14.5 ounces) diced tomatoes, undrained, 1 cup water, 1 ½ teaspoons fresh thyme leaves, ½ teaspoon kosher salt, more to taste, ½ teaspoon black pepper, more to taste
Increase heat to high, and add green beans and cabbage. Return to a simmer, reduce heat, and cook until vegetables are tender, 10 minutes. If you're not ready to serve the soup, keep it on low heat until ready to serve.
2 cups fresh green beans, cut into 1-inch pieces, 3 cups shredded cabbage
To serve, taste the soup and add more salt and pepper, if needed. Stir in parsley. To garnish, sprinkle with Parmesan cheese or homemade croutons.
grated Parmesan cheese, optional, homemade croutons, ½ cup chopped fresh parsley
Video
Notes
If you prefer softer vegetables: Add the green beans and cabbage with the broth. Simmer 30 minutes or more, or until vegetables are desired consistency.
Variations: Add meat (bacon, sausage, ground beef, etc.); add or substitute other vegetables; add a can of beans such as cannellini, kidney, pinto; add ½ cup of uncooked rice or barley when you add the broth.
Storage: Vegetable soup is just as good leftover and is perfect for lunch. Store it in the fridge for up to 4 days, or freeze it up to 3 months. Reheat on the stove top or microwave.