Italian Sausage without steak pasta

1 teaspoon salt 1 (16 ounce) package lasagna noodles 1 pound ground Italian sausage 1 (14.5 ounce) can diced tomatoes 3 (8 ounce) cans tomato sauce 1[...]

cooking spray 1/2 pound bulk mild Italian sausage 3 tablespoons butter 3 tablespoons all-purpose flour 2 cups low-fat milk 1 pinch salt 1 pinch ground nutmeg[...]