Vegetarian Tortilla Soup

INGREDIENTS

• 2 tablespoons vegetable oil
• 1 (1 pound) package frozen pepper and onion stir fry mix
• 2 cloves garlic, minced
• 3 tablespoons ground cumin
• 1 (28 ounce) can crushed tomatoes
• 3 (4 ounce) cans chopped green chile peppers, drained
• 4 (14 ounce) cans vegetable broth
• salt and pepper to taste
• 1 (11 ounce) can whole kernel corn
• 12 ounces tortilla chips
• 1 cup shredded Cheddar cheese
• 1 avocado - peeled, pitted and diced