Steps
1. Heat olive oil in a pot over medium heat.
2. Add diced onion and minced garlic, sauté until fragrant.
3. Stir in sliced carrot and chopped celery, cook for a few minutes.
4. Pour in vegetable broth and bring to a simmer.
5. Add cooked beans, season with salt and pepper.
6. Let the stew simmer for about 15-20 minutes.
7. Taste and adjust seasoning if needed.
8. Serve hot, garnished with fresh parsley.