Chicken Avocado Tortilla Soup
["1/3 c. onion, chopped", "3 cloves garlic, minced", "3/4 tsp. ground cumin", "3/4 tsp. dried oregano", "1/4 tsp. chili powder", "1/4 tsp. pepper", "8 c. chicken broth", "1 can diced tomatoes", "1 can diced green chilies", "10 corn tortillas", "1 1/2 lb. chicken breast", "1 firm ripe avocado", "2 Tbsp. cilantro", "salt to taste"]
["In a 5 to 6-quart pan over medium heat, stir onion, garlic, cumin, oregano, chili powder and pepper until all spices are fragrant, approximately 1 minute. Add broth, diced tomatoes and green chilies. Cover and boil. Stack tortillas and cut in 1/8-inch wide strips. Add to pan. Reduce heat, cover and simmer for 15 minutes. Stir occasionally."]
["onion", "garlic", "ground cumin", "oregano", "chili powder", "pepper", "chicken broth", "tomatoes", "green chilies", "corn tortillas", "chicken breast", "firm ripe avocado", "cilantro", "salt"]