My mother gave me this recipe several years ago, and we have prepared it often ever since. It can be a meal in itself...or serve it along with a Mexican meal. I often take it to potlucks and watch it disappear in no time!
In a large salad bowl, toss together the beans, green onions, tomato, avocado and half of the Catalina dressing. Top with cheese and then lettuce. Refrigerate. Just before serving, add corn chips to salad and toss. Serve with remaining dressing.