Some foods are so versatile, you’ll want to transform the leftovers into salads, pastas or sandwiches. Here are handy staples that do double-duty: quinoa, tofu, chickpeas, pork tenderloin, chicken fingers, roasted vegetables, meatballs, salmon…Now that you’ve got the gist, check out our full recipe collection to come up with your own delicious “cook once, eat twice” ideas!