Baked Ziti without eggs chicken

itemscope itemtype="http://data-vocabulary.org/RecipeIngredient"> 4 ounces uncooked ziti 1 tablespoon olive oil 2 cups chopped yellow squash 1 cup chopped[...]

Salt and pepper 8 ounces hot Italian sausage, casings removed 2 tablespoons unsalted butter 2 tablespoons all-purpose flour 2 cups milk 8 ounces ziti 1 1/2[...]