A leftovers recipe is a great way to use up food that would otherwise go to waste. A popular leftovers recipe is HASH, which is a dish made of diced potatoes and other ingredients such as onions, peppers, and meats. Another popular leftovers recipe is STEW, which is a combination of vegetables, meats, and other ingredients cooked in a liquid. Both recipes are easy to make and can be adapted to use whatever ingredients you have on hand.