Preheat the oven to 350°F.

In a medium saucepan over medium heat, warm sauce.

Dip 3 tortillas in sauce and lay them so they are slightly overlapping on the bottom of a 9 X 13 inch glass baking dish lightly coated with oil or cooking spray.

In a large bowl, mix together 1 cup of the sauce, the sour cream, 1 cup of the cheese, the corn, green onions, chiles, and chicken.

Spread half of this filling mixture over the tortillas.

Dip 3 more tortillas in sauce and lay on top.

Cover with the remaining filling mixture.

Dip the last 3 tortillas in the sauce and lay on top of the filling mixture.

Pour remaining sauce over everything.

Sprinkle with remaining cheese.

Bake, uncovered, until bubbly, 35 to 40 minutes.

Let stand 5 to 10 minutes before serving.