Spicy Tomato and White Bean Soup

INGREDIENTS

• 1 (14-ounce) can fat-free, less-sodium chicken broth, divided
• 2 teaspoons chili powder
• 1 teaspoon ground cumin
• 1 (16-ounce) can navy beans, drained and rinsed
• 1 medium poblano chile, halved and seeded
• 1/2 onion, cut into 1/2-inch-thick wedges
• 1 pint grape tomatoes
• 1/4 cup chopped fresh cilantro
• 2 tablespoons fresh lime juice
• 1 tablespoon extravirgin olive oil
• 1/2 teaspoon salt
• Cilantro sprigs (optional)