INGREDIENTS
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1 tablespoon olive oil
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2 medium onions, halved and thinly sliced
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1/2 teaspoon dried thyme
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Coarse salt and ground pepper
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1 package (8.8 ounces) pappardelle pasta or 8 ounces fettuccine
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2 tablespoons butter
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2 ounces Parmesan, shaved with a vegetable peeler