Macaroni and Cheese Casserole Recipe

Cook macaroni in boiling, salted water according to package directions. Drain. Set oven for moderate, 375 degrees. Melt butter or margarine; blend in flour, 1 tsp. salt, and pepper. Add milk; cook over low heat until smooth and thickened, stirring constantly. Add cheese, onion, mustard, and Worcestershire sauce; continue to cook until cheese melts. Add macaroni. Pour into a greased 2-quart casserole. Top with crumbs. Bake about 25 minutes or until browned. Makes 6 to 8 servings.