To help guide your choices, check out the Nutrition Facts label. Ideally, you want up to 500 calories, no more than 15 g of fat (5 g or fewer saturated), no trans fats, and less than 700 mg of sodium, says Cynthia Sass, RD, a spokesperson for the American Dietetic Association.  Today, there are lots of delicious entre that fit the bill. Some of our favorites include Lean Cuisine Chicken in Peanut Sauce, Kashi Lime Cilantro Shrimp, and Amy’s Vegetable Lasagna; each is hearty, healthy, and flavorful. Need to keep your energy up postdinner? Add a sprinkling of nuts or ½ cup of beans to your meal or choose an entrée that contains around 20 g of protein. (Many South Beach Diet frozen suppers and Lean Cuisine Dinnertime Selects do.) One warning: If you’re turning to frozen foods most nights, eat an additional side of veggies or a bowl of fruit for dessert to get fiber, antioxidants, and other nutrients.