Prepare pasta according to package directions; drain. Heat oven to 350º F.
Meanwhile, in large saucepan over medium heat, melt butter.
Blend in flour, salt and pepper; gradually stir in milk. Cook, stirring constantly, until sauce thickens and mixture begins to boil. Add cheese; stir until cheese is melted.
In 3-quart casserole dish, stir together pasta and cheese sauce.
Bake 30 minutes or until bubbly.
Servings 0