1 cup finely crushed butter-flavored crackers (about 25 crackers)
In a large skillet, cook beef, onions and celery in butter over medium heat until meat is no longer pink; drain. Stir in the flour, salt and pepper until blended. Gradually add the milk, pimientos and soy sauce. Bring to a boil; cook and stir for 2 minutes or until thickened. Stir in spaghetti.
Transfer to a greased 11x7-in. baking dish. Sprinkle with cracker crumbs. Bake, uncovered, at 350° for 30-35 minutes or until heated through.