CRUMBLE meat into microwaveable plastic colander; place over microwaveable bowl. Microwave on HIGH 8 min., stirring and breaking up meat every 2 min. Discard fat. Transfer meat to 9-inch microwaveable pie plate. Stir in seasoning mix and water. Microwave 5 min., stirring after 3 min.

REMOVE half of meat mixture; set aside. Cover remaining meat mixture in pie plate with half of the tortilla quarters. Repeat layers of meat mixture and tortillas. Top with salsa and cheese. Microwave 4 min.

TOP with remaining ingredients. Cut into wedges to serve.