1Heat oven to 375°F. Spray 9-inch glass pie plate with cooking spray. Place uncooked macaroni in pie plate. Sprinkle with 1 3/4 cups of the cheese.
2In medium bowl, stir remaining ingredients with wire whisk or fork until blended. Pour into pie plate.
3Spray sheet of foil with cooking spray; place sprayed side down over pie plate. Bake 40 minutes. Uncover; bake 8 to 10 minutes longer or until knife inserted in center comes out clean. Sprinkle with remaining 1/4 cup cheese. Bake 1 to 2 minutes longer or until cheese is melted. Let stand 5 minutes before serving.