Prepare pasta according to package directions. Keep warm.
Melt butter in a large saucepan or Dutch oven over medium-low heat; whisk in flour until smooth. Cook, whisking constantly, 2 minutes. Gradually whisk in milk, and cook, whisking constantly, 5 minutes or until thickened. Remove from heat. Stir in salt, black and red pepper, 1 cup shredded cheese, and cooked pasta.
Spoon pasta mixture into a lightly greased 2-qt. baking dish; top with remaining 1 cup cheese.
Bake at 400°F for 20 minutes or until bubbly. Let stand 10 minutes before serving.
Note: For testing purposes only, we used Kraft Sharp Cheddar Cheese. To lighten, 2% reduced-fat milk and reduced-fat cheese may be substituted.
One-Pot Macaroni and Cheese: Prepare recipe as directed, stirring all grated Cheddar cheese into thickened milk mixture until melted. Add cooked pasta, and serve immediately. Prep: 10 min., Cook: 7 minutes.