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Preheat oven to 375 degrees F.
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Put farro, 4 cups of water and salt into a saucepan and bring to a boil. Reduce heat and partially cover the pan.
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Let farro simmer until it is tender. This will take approximately 20 minutes. Drain the farro and spread it on a baking sheet. Let the farro cool and dry out a bit.
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Toast walnuts in preheated oven until the nuts are lightly browned and fragrant. This will take from 5 to 7 minutes. Remove the walnuts from the oven, let them cool and then coarsely chop them
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Whisk oil, lemon juice,honey, chives and crushed red pepper in a large bowl. Season with salt. Add walnuts, olives, scallions, and raisins to the dressing. Toss with the farro.
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Refrigerate salad over night to let the flavors marry.
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Serve salad on a platter, garnished with shaved cheese. Serve at room temperature.