Cook rotini according to instructions on package. One minute before cook time is finished, drop broccolini into pot. Drain and set aside.
Heat olive oil in a large skillet over medium heat. Add garlic and cook for about 2 minutes, until fragrant. Stir in pine nuts and red pepper flakes (if using) and cook about 2 minutes more. Stir in sun-dried tomatoes, pasta and broccolini, and season with salt and pepper.
Remove from heat. Divide into bowls and garnish with shaved Parmesan cheese.
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