Step 1

Heat oven to 375ºF.

Step 2

Brown meat with onions and peppers in large skillet on medium heat. Stir in chili powder; cook 1 min. Add salsa and corn; mix well. Simmer 5 min., stirring frequently.

Step 3

Spread 1 cup meat mixture onto bottom of 8- or 9-inch square baking dish sprayed with cooking spray; top with layers of 1 tortilla, 1/2 cup meat mixture, sour cream and 1/4 cup cheese. Cover with second tortilla, 1 cup of the remaining meat mixture and 1/4 cup cheese; top with remaining tortilla and meat mixture. Cover.

Step 4

Bake 25 min. or until heated through. Top with remaining cheese; bake, uncovered, 5 min. or until melted.