To make the sauce add the milk, flour and butter to a saucepan, heat over a medium heat whisking constantly until mixture comes to the boil and has thickened. (madebyjayne.com)
While chicken mixture is cooking, heat tomato sauce in medium saucepan until comes to a boil. (midwestmodernmomma.com)
Cook pasta as directed on the package, adding salt when water comes to a boil. (humanesociety.org)