Step 1: Sauté Aromatics : Heat olive oil in a large pot over medium heat. Add chopped onion, carrots, and celery. Sauté for 5–6 minutes until softened. Add minced garlic and cook for 30 seconds until fragrant.
Step 2: Add Remaining Vegetables : Add zucchini, red bell pepper, and green beans to the pot. Stir well to combine and cook for 2–3 minutes.
Step 3: Add Broth and Seasonings : Pour in vegetable or chicken broth and canned tomatoes with juice. Add thyme, parsley, basil, salt, pepper, and optional paprika or turmeric. Bring to a gentle boil, then reduce heat and simmer for 20 minutes until vegetables are tender.
Step 4: Adjust Seasoning : Taste and adjust salt, pepper, or herbs as needed. For extra flavor, add a squeeze of lemon juice or a drizzle of olive oil before serving.
Step 5: Serve : Ladle soup into bowls. Garnish with fresh herbs, croutons, or a sprinkle of Parmesan. Serve hot with crusty bread or as a standalone light meal.