Put tomatoes with juice in saucepan and with sharp kitchen shears, cut into pieces.
Add butter, onion halves, and salt. Bring to simmer.
Cook uncovered for 45 minutes. Stir occasionally, using wooden spoon to mash up any big tomato pieces. Discard onion and toss with pasta to serve.
Calories From Fat
% Daily Value*
Total Fat 0g
Saturated Fat 0g
Trans Fat 0g
Dietary Fibers 0g
* Percent Daily Values are based on a 2,000 calorie diet.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.