If you miss pasta, because you don’t eat wheat or you’re on a low-carbohydrate diet, this dish makes a nice stand-in for fettuccine. Be careful not to overcook — it will be al dente with a few minutes of cooking, after which it will quickly fall apart. When made just right, it’s silky and wonderful. You can serve as is, or toss it with a fresh tomato sauce. Use a vegetable peeler or mandolin to make the thin zucchini strips.