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["Preheat the oven to 400 degrees F.", "Core the apples, maintaining the peel, and place on a sheet pan.", "Roast in the oven 20 minutes, until soft and juicy.", "Remove and allow to cool.", "Squeeze flesh from peel and discard peel.", "In a large bowl, combine the apple flesh with the ricotta, egg, amaretti, 1/4 cup cheese and salt and mix well to combine.", "Roll out the pasta to the thinnest setting on a pasta rolling machine, then cut into 2-inch squares.", "In center of half of the squares, place a scant tablespoon full of the apple and cheese mixture.", "Moisten the edges of these squares with water, then top each square with an un-filled square, and press with your fingers to seal the edges.", "Bring 6 quarts of water to a boil and add 2 tablespoons salt.", "In a 12-to 14-inch saute pan, heat the butter until it foams and subsides.", "Meanwhile, drop the pasta in the boiling water and cook 3 minutes.", "Drain the pasta, reserving the cooking liquid, and add the pasta to the pan with the butter.", "Add a splash of the pasta water if necessary to keep the sauce from becoming too ""tight.""