Bring a small pot of salted water to a boil. Add the broccoli and cook, stirring occasionally, until the broccoli is tender, 3 to 4 minutes. Drain and run under cold running water, then drain again.
Place the broccoli, basil, cheese, walnuts, 1/2 teaspoon salt, red pepper flakes and garlic in a food processor and pulse until coarsely chopped. Add the broth and oil and process until smooth.
Meanwhile, cook the pasta according to package directions. Drain and transfer the fettuccine to a large bowl. Add the pesto, sun-dried tomatoes and lemon zest and toss to coat well.
Per Serving: 286 Cal; 24 g Protein; 12 g Tot Fat; 3 g Sat Fat; 5 g Mono Fat; 28 g Carb; 4 g Fiber; 2 g Sugar; 160 mg Calcium; 4 mg Iron; 732 mg Sodium; 4 mg Cholesterol