Stocking your pantry doesn't mean you have to rely only on unhealthy foods. There are plenty of pantry staples that have health benefits and are ingredients you'll use often. When stocking their pantries, nutritionists choose items that are healthful, easy to cook and have a long shelf-life. We asked registered dietitian nutritionists (RDNs) from around the country for their must-have pantry staples and ways they use them.