ZITI WITH SKILLET-ROASTED ROOT VEGETABLES 2 tablespoons olive oil 2½ cups coarsely chopped red onion 2 cups ½ inch pieces peeled parsnips 2 cups ½ inch pieces peeled red-skinned sweet potatoes (yams) 2 cups ½ inch pieces peeled golden beets, greens coarsely chopped and reserved 1 tablespoon chopped fresh rosemary 1½ cups (about) vegetable broth, divided 1 pound ziti or other tubular pasta 2 tablespoons (¼ stick) butter 1½ cups grated Parmesan cheese, divided Heat oil in large nonstick skillet over high heat. Add onion and all vegetables except beet greens; saute until vegetables begin to soften and brown, 8 to 9 minutes. Add rosemary: stir 1 minute. Add 1 cup broth; bring to boil. Reduce heat to medium; sprinkle with salt and pepper. Cover skillet and cook until vegetables are tender. stirring occasionally, 15 to 18 minutes. Meanwhile, cook pasta in large pot of boiling salted water until just tender but still firm to bite, stirring occasionally. Drain. Return pasta to pot. Stir beet greens and butter into vegetables: add to pasta. Stir in 1 cup Parmesan and more vegetable broth by 1/3 cupfuls to moisten. Season with salt and pepper. Serve with remaining Parmesan. SERVES: 4 Bon Appetit