Go to the freezer section for frozen edamame.
These young green soybeans, in or out of their shell, are wonderful as snacks; just steam them and add a little salt. You can also add them to soups and salads. Soy has more protein, by volume, than beef, and virtually none of the saturated fat.
Pick up pork chops or a lean pork loin.
Pork loin is very lean meat and isn’t too expensive. Throw a couple of chops on the grill (dress them up first with a low-calorie garlic–lime juice marinade, or with chili and garlic powders) for a quick dinner—each is just 129 calories, with a healthy 16 grams of protein.
Buy a package of chicken tenderloins.
Keep them in your freezer for quick meals. Each tenderloin weighs about 11⁄2 to 2 ounces, which makes portion control easy for you—two tenderloins are roughly equal to one 3-ounce serving, which is about the size of a deck of cards. Tenderloins will marinate quickly and can be used in kebabs or tossed into stir-fry dishes.