Step 1

Heat oven to 400°F. Spray 2-quart casserole with cooking spray. Cook and drain macaroni as directed on package, using minimum cook time.

Step 2

Meanwhile, in 3-quart saucepan or Dutch oven, melt butter over medium-low heat; stir in flour with whisk until smooth. Cook 2 minutes, stirring constantly. Gradually stir in milk; cook 5 minutes, stirring constantly, until thickened. Remove from heat. Stir in salt, black pepper, red pepper and 1 cup of the cheese. Stir in cooked macaroni.

Step 3

Spoon mixture into casserole. Sprinkle with remaining 1 cup cheese.

Step 4

Bake uncovered 20 minutes or until bubbly. Let stand 10 minutes before serving.