Heat oven to 350°F. In ungreased 2 1/2-quart casserole, place green beans. In medium bowl, mix soup, dip and chiles; stir into beans. Bake 20 minutes.
Remove from oven. Stir mixture; bake 15 to 25 minutes longer or until hot and bubbly. Sprinkle with corn chips; bake 5 to 10 minutes longer or until bubbly around edge.