- With the rack in the middle position, preheat the oven to 450°F (230°C). Line a baking sheet with parchment paper.
- On the baking sheet, toss the bell peppers, carrots and onion with the oil. Bake for 20 minutes or until the vegetables are tender and lightly browned, stirring halfway through cooking. Season with salt and pepper.
- In a large pot, combine the broth, tomatoes, beans and roasted vegetables. Bring to a boil and simmer for 5 minutes. Adjust the seasoning.
- Serve with toasted country bread.