Save 70 calories and 9 grams of fat per serving by preparing with extra-lean ground beef, KRAFT Light Zesty Italian Dressing, BREAKSTONE'S Reduced Fat or KNUDSEN Light Sour Cream and KRAFT 2% Milk Shredded Four Cheese Mexican Style Cheese.

Line 13x9-inch baking dish with foil, with ends of foil extending over sides of dish. Assemble recipe in prepared dish as directed. Cover with foil. Freeze up to 3 months. When ready to serve, heat oven to 400ºF. Bake, covered, 1 hour. Remove foil. Bake an additional 15 to 20 min. or until casserole is heated through and cheese is melted. Let stand 5 min. before cutting to serve. To decrease the baking time, thaw casserole in refrigerator overnight, then bake, uncovered, 45 min. or until casserole is heated through and cheese is melted.

Top with chopped tomatoes, shredded lettuce and cilantro.