Heat the olive oil in a large pot over medium-high heat. Cook the onion, carrots, celery, and garlic until softened, 4-5 minutes.
Add the cabbage and cook for another 5 minutes.
Add the vegetable broth, diced tomatoes, salt, black pepper, Italian seasoning, and bay leaf. Bring to a boil, then reduce and simmer for 10 minutes or until veggies are softened.
Taste and add more salt and pepper to taste. Enjoy!
Nutrition information is calculated using an ingredient database and should be considered an estimate.