1 tablespoon vegetable oil |
6 cups chopped onion (about 1 1/2 pounds) |
1/2 teaspoon salt |
1 1/2 cups chopped red bell pepper (about 1 large) |
6 garlic cloves, minced |
1 (7-ounce) can chipotle chiles in adobo sauce |
1 tablespoon ground cumin |
1 1/2 teaspoons dried oregano |
4 (15-ounce) cans black beans, drained |
1 (14 1/2-ounce) can 99% fat-free vegetable broth |
1 (14 1/2-ounce) can italian-style stewed tomatoes, undrained and chopped |
1/2 cup chopped fresh cilantro |
1/4 cup fresh lime juice (about 1 large) |