1Heat oven to 350°F. Spray 13x9-inch (3-quart) glass baking dish with cooking spray. In medium bowl, mix black beans, corn, green chiles, 1 cup of the cheese and 1/4 cup of the enchilada sauce.
2Spread 1/2 cup of the enchilada sauce over bottom of baking dish. Spoon 1/2 cup bean mixture down center of each tortilla. Roll up tortillas; place seam sides down in baking dish. Spoon remaining enchilada sauce over enchiladas. Sprinkle with remaining 1 cup cheese. Spray sheet of foil with cooking spray. Cover baking dish with foil, sprayed side down.
3Bake 30 to 35 minutes or until thoroughly heated. Serve topped with lettuce, tomatoes, avocado, sour cream and salsa.