Leftovers can lose their luster pretty quickly when you’re reheating the same plate day after day. And that often leads to food waste. More than three-quarters of Americans surveyed by the American Chemistry Council reported throwing away leftovers at least once a month, and more than half said they did so weekly. But transforming your leftovers into an entirely new, delicious meal can make them a lot more attractive, and save you money and time since you’re not cooking from scratch. One of the best, most versatile meals to make with holiday leftovers is the humble sandwich. Almost half of Americans eat a sandwich on any given day, according to the U.S. Department of Agriculture (USDA). Plus, sandwiches are completely customizable based on what you have on hand and what you enjoy eating most. Have some extra veggies? Throw them on top. Prefer Dijon mustard to a grainy mustard? Make the swap. Whenever possible, use a whole-grain bread as your base and add as many fruits and veggies as possible for the healthiest sandwich. Here are three delicious recipes to whip up with your holiday leftovers.