Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      tablespoons   olive oil -- or salad oil
   1      medium        onion -- chopped
  28      ounces        Italian plum tomatoes -- canned
                        sugar
                        salt
   3      large         potatoes -- 1 1/2 lb, peel,
                        -- quarter
   1      cup           flour -- all-purpose
                        parmesan cheese -- grated, optional

Preparation:

1. About an hour before serving, prepare marinara sauce: in 12" skillet over medium heat, in hot oil, cook onion until tender. Stir in tomatoes with their liquid, 1 1/2 tsp. sugar, and 1 1/4 tsp salt; over high heat, heat to boiling. Reduce heat to med-low; cover and simmer 20 minutes. 2. Meanwhile, boil potatoes in water 15 minutes or until fork-tender. Drain and mash potatoes. In large bowl, mix mashed potatoes, flour, 1 tbsp sugar, and 3/4 tsp salt to make a soft dough. On lightly floured surface, knead dough until smooth and slightly sticky. Cut dough into 12 pieces. Roll each piece into a 1/2" diameter log. With floured fork, make indentations all the way down each log. Cut logs into 1 1/4" pieces (gnocchi) 3. In 5 qt saucepot over high heat, heat 4 qts water to boiling. Add gnocchi. With slotted spoon, carefully remove gnocchi to platter as soon as they start to float. Spoon marinara sauce over gnocchi. If you like, sprinkle with Parmesan.