Prep Time: 20
Cook Time: 25
Serves: Serves: 6
Melt butter in a large saucepan over medium heat. Add flour; cook and stir 1 minute. Add milk, salt and pepper flakes. Bring to a boil, stirring frequently. Reduce heat; simmer 2 minutes or until sauce thickens. Stir in 1-1/2 cups cheese until melted. Stir in cooked macaroni; immediately transfer mixture to a greased or sprayed 8 or 9-inch baking dish.
Toss breadcrumbs with oil and remaining cheese; sprinkle over mac and cheese mixture. Bake in a preheated 375°F oven 20 to 25 minutes or until heated through and topping is golden brown.