Ingredients :

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2 pounds Baking potatoes
1 cup All−purpose flour
1 Whole egg plus
1 Egg yolk, lightly beaten
2 tablespoons Unsalted butter, softened
1 teaspoon Salt
Freshly grated Parmesan cheese
Tomato sauce

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Method :

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Boil the potatoes in their jackets, drain, peel and put through a ricer or food mill. While the potatoes are still warm, blend in the flour, add the egg, egg yolk, butter and salt. Place the potato mixture on a floured board and knead lightly; the dough will be soft. Roll the dough in 1" thick sticks about 10" long.
Cut each roll into 3/4" pieces. Rub each piece of dough lightly over the coarse side of a cheese
grater over a large pot of boiling salted water. Cook the gnocchi until they rise to the top of the water. Using a slotted spoon, remove the gnocchi to a warm bowl.
Sprinkle with Parmesan cheese, top with tomato sauce and serve