In this dish, the shrimp and spinach are cooked with the pasta. Prepare pasta according to package directions. While the pasta is cooking, stir together the yogurt, feta cheese, garlic, dill and pepper in a large mixing bowl. Two minutes before the pasta is done, stir the shrimp and spinach into the pot with the pasta. Cook two minutes. Drain the pasta, shrimp and spinach thoroughly. Stir into the yogurt mixture and season to taste with salt. Serve immediately. Each serving provides: 537 Calories; 43 g Protein; 67 g Carbohydrates; 11 g Fat; 299 mg Cholesterol; 641 mg Sodium. Calories from Fat: 19% Copyright National Pasta Association (http://www.ilovepasta.org) (Reprinted with permission)