To make the Sauce: Take the tomatoes out of the can, cut in half, and remove the seeds. Chop the tomatoes into small pieces and reserve the juice. In a saucepan, add olive oil and garlic and saute for 1 minute.
Add the tomatoes, salt, pepper and chili and bring to a simmer for 5 minutes. If necessary, add the reserved juice.
Add the basil. Finish with cream.
Preheat the oven to 300 degrees F.
Bake the potatoes for approximately 1 to 1 1/2 hours, until tender. Scoop each potato out of its skin into mixing bowl. Mash the potatoes to a fine consistency.
In a separate bowl, combine egg yolks, melted butter, salt, pepper and nutmeg.
Add the egg mixture to the potatoes and mix together.
Add flour to mixture, 1 cup at a time, and mix until smooth.
Scoop out and make finger sized rolls on floured board.
Cut with knife into bite sized pieces.
Roll each piece over the back of a fork to make a round form. In a pan, freeze until hard enough to handle, and put into portion sized bags.
Fill a large pot with water and add a pinch of salt and boil. Drop gnocchi into boiling water 3 or 4 at a time so the water doesn't stop boiling. The gnocchi is ready when it floats to the top.
Drain gnocchi and scoop out into bowl and add sauce.