Step 1

In 5- to 6-quart slow cooker, mix corn, beans, diced tomatoes, tomato sauce, green chiles and onion. Stir in broth, chicken and taco seasoning. Cover; cook on High heat setting 4 hours or Low heat setting 8 hours.

Step 2

While soup is cooking, heat oven to 425°F. Brush both sides of each tortilla with vegetable oil. Stack tortillas, and cut into 1/4-inch strips. Spread in single layer on large cookie sheet, and sprinkle with salt; bake 7 to 9 minutes or until golden brown and crisp, stirring halfway through to ensure even browning. Cool.

Step 3

When ready to serve, ladle soup into serving bowls, and garnish with tortilla strips, cheese, sour cream, cilantro and avocado, as desired.