1. |
Heat the oil in a large saucepan over medium heat. |
2. |
Add celery, carrot, onion, and garlic (optional). Cook, stirring occasionally until softened, about 10 minutes. |
3. |
Stir in the tomatoes, kidney beans (rinsed and drained), white beans (rinsed and drained) and prepared vegetable broth (water and cube); bring to a boil. |
4. |
Reduce the heat and simmer, covered, stirring occasionally, until the flavors are blended, about 30 minutes. |
5. |
Add cilantro, salt and pepper; cook, stirring occasionally, about 5 minutes. |