1. Cook pasta according to package directions, omitting salt and fat. Drain in a colander over a bowl, reserving 1/2 cup cooking liquid. Place pasta in a bowl.
2. Place 1 tablespoon pine nuts and garlic in a food processor; process until minced. Add arugula and the next 5 ingredients (through black pepper), and process until well combined.
3. Add arugula mixture and reserved cooking liquid to serving bowl; toss well to coat. Serve with cheese.
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