Preheat oven to 375°F. Spray 13x9-inch glass baking dish with cooking spray. Spread 1 cup sauce over bottom of baking dish; set aside. Stir together 1/4 cup more sauce, beans, drained tomatoes, spinach, corn and 1/2 cup cheese in medium bowl.
Top each tortilla with 1/3 cup bean mixture. Roll up and place seam-side down in baking dish. Spoon remaining sauce over top of enchiladas; sprinkle with remaining 1 cup cheese.
Cover dish with aluminum foil; bake 30 minutes or until enchiladas are hot and cheese melts.