Place a layer of tortillas onto the bottom of a 13×9-inch (3-quart) baking dish.
Top with the meat and the. Another layer of tortillas; sprinkle on the cheese.
Place under the broiler until cheese is melted.
To Make Ahead: Wrap foil-covered casserole in double layer of plastic wrap; Thaw in refrigerator. Remove plastic wrap (leave on the foil). Bake at 350 for 1 hour or until center is hot (165°F) and cheese is melted (or bake without thawing for about 1 hour and 40 minutes).