Ingredients
16 ounces 1 package uncooked cavatappi
3/4 cup butter
1.5 cup finely chopped onion
6 tablespoons all-purpose flour
3/4 teaspoon salt
1/4 teaspoon pepper
5 cups heavy cream
6 cups shredded sharp cheddar cheese
3/4 cup dry bread crumbs
Preparation
Preheat oven to 350°. Cook pasta according to package directions for al dente; drain.
In a large sauce pan, heat 1/2 cup butter over medium heat; saute onion until tender. Stir in flour and seasonings until blended; gradually stir in cream. Bring to a boil, stirring constantly; cook and stir until thickened. Stir in cheese until melted. Stir in pasta. Transfer to a greased 13x9-in. baking dish.
In a microwave, melt remaining butter; toss with bread crumbs. Sprinkle over casserole. Bake, uncovered, until heated through, 30-35 minutes.
