Prepare the Vegetables – Wash and chop all the vegetables into small pieces.
Sauté the Aromatics – In a large pot, heat a little olive oil (if using) over medium heat. Add the onion, leek, and celery, and sauté for about 3-5 minutes until soft and fragrant.
Add the Remaining Vegetables – Stir in the carrot, red pepper, and zucchini, letting them cook for another 2 minutes.
Simmer the Soup – Pour in enough water or vegetable broth to cover the vegetables. Bring to a boil, then reduce the heat and let it simmer for about 20-25 minutes until all the vegetables are tender.
Blend or Serve as Is – For a creamy texture, use a blender or immersion blender to blend the soup until smooth. If you prefer a chunkier soup, serve it as is.
Season and Garnish – Add salt, black pepper, and fresh herbs to taste. Serve warm and enjoy this healthy, metabolism-boosting meal!