HEAT oven to 400°F.
BROWN meat in large skillet. Add Velveeta and water; cook and stir 5 min. or until Velveeta is melted. Remove from heat. Stir in salsa.
SPREAD 1/4 of the meat mixture onto bottom of 8-inch square baking dish sprayed with cooking spray; top with 2 tortillas. Repeat layers 2 times. Top with remaining meat mixture; sprinkle with shredded cheese; cover.
BAKE 30 min. Uncover; let stand 5 min. before cutting to serve.
