Heat oven to 400. Lightly grease a 10" pie plate. Sprinkle turkey, mushrooms, onions, salt, and cheese in pie plate. Beat remaining ingred. until smooth, in blender on high. Pour into pie plate. Bake until golden brown and knife inserted halfway between center and edge comes out clean, 30-35 minutes. Let stand 5 min. before cutting. Refrig. any remaining pie.
