HEAT oven to 375°F.

BROWN meat with peppers in large skillet; drain. Return meat mixture to skillet. Stir in salsa, tomatoes and corn.

SPREAD 1 cup meat mixture onto bottom of 13x9-inch baking dish; top with 6 tortillas, overlapping as necessary to fit. Cover with layers of half each of the remaining meat mixture and cheese; top with remaining tortillas and meat mixture. Cover with foil.

BAKE 25 to 30 min. or until heated through. Top with remaining cheese; let stand, covered, 5 min. or until melted.