Add the minced garlic and cook for another minute until fragrant.
Stir in the dried oregano, basil, and red pepper flakes. Cook for 30 seconds to bloom the spices.
Add the chopped cabbage, bell peppers, and undrained fire-roasted tomatoes to the pot. Stir everything together.
Pour in the vegetable broth and season with salt and black pepper. Increase the heat to bring the soup to a boil.
Once boiling, reduce the heat to low, cover the pot, and let it simmer for at least 20-25 minutes, or until the cabbage and other vegetables are tender.
Taste the soup and adjust seasoning if necessary. Serve hot.
Notes
For a thicker texture, blend part of the soup before serving. Experiment with different vegetables for added nutrients.