Kielbasa, Pasta and Cheddar Bake

1/2 lb lean kielbasa , sliced 6 ounces elbow macaroni 1 1/2 cups shredded white cheddar cheese 1 tablespoon butter salt and pepper 1 Cook macaroni until[...]

1 lb rigatoni pasta 2 tablespoons olive oil 1 large onion , sliced 1/4 cup all-purpose flour 1 quart milk 3 cups extra-sharp cheddar cheese 1 teaspoon hot[...]