8 small flour tortillas, warmed (6 to 7-inch diameter)
3/4 cup shredded reduced fat Cheddar cheese or Mexican cheese blend
Heat oven to 400°F. Heat large nonstick skillet over medium heat until hot. Add ground beef; cook 8 to 10 minutes, breaking into 3/4-inch crumbles and stirring occasionally. Pour off drippings; season with salt and pepper, as desired.
Stir in salsa, beans and corn; cook and stir 4 to 5 minutes or until thickened and heated through.
Spray baking sheet with cooking spray. Arrange 4 tortillas on baking sheet, overlapping slightly, if necessary. Sprinkle 1/2 of cheese evenly over tortillas. Spoon beef mixture evenly over cheese; top with remaining cheese and tortillas. Spray top tortillas with cooking spray.
Bake in 400°F oven 11 to 13 minutes or until quesadillas are lightly browned and edges are crisp. Cut into wedges to serve.