Slow-Cooker Chipotle Beef Stew

Stew

• 1 package (12 oz) frozen whole kernel corn
• 1 lb boneless beef top sirloin, trimmed of fat, cut into 1-inch cubes
• 1 chipotle chile in adobo sauce (from 7-oz can), finely chopped
• 2 large onions, chopped (2 cups)
• 2 poblano chiles, seeded, diced
• 3 cloves garlic, chopped
• 2 cans (14.5 oz each) diced tomatoes, undrained
• 1 1/2 teaspoons ground cumin
• 1/2 teaspoon salt
• 1/4 teaspoon cracked black pepper

Toppings

• 1 avocado, pitted, peeled, cut into 12 wedges
• 12 baked tortilla chips, crushed
• 6 small cilantro sprigs, coarsely chopped
• 6 tablespoons reduced-fat sour cream