Steps
1. In a pot, sauté the diced onion and red bell pepper until softened.
2. Add minced garlic and Cajun seasoning, cook until fragrant.
3. Pour in the diced tomatoes and vegetable broth, bring to a simmer.
4. Let the soup simmer for about 15-20 minutes to allow flavors to meld.
5. Season with salt and pepper to taste.
6. Serve hot, garnished with fresh parsley.