Pistachios add satisfying crunch to whole-grain salads, baked goods, oatmeal, and ice cream. Try roasting them with Chinese five-spice powder, or whirl up a smoothie with pistachios, yogurt, soymilk, and ginger. Limit yourself to a handful, or 1 ounce, to avoid calorie overload, says Nussinow. And buy pistachios in the shell—the extra work of shelling may help control intake.