Leftover chicken breast can be used in a variety of recipes to create new meals. Some ideas include adding it to salads, wraps, or sandwiches, using it in casseroles or soups, or incorporating it into pasta dishes or stir-fries. When using leftover chicken, its important to keep it from drying out by adding it at the end of the recipe and giving it time to reheat without overcooking. Leftover chicken can be kept in an airtight container in the fridge for up to 5 days or in the freezer for up to 3 months. If a recipe calls for raw chicken, leftover chicken breasts can be substituted instead, but its best to add the cooked chicken just long enough for it to be warmed through. With a little creativity, leftover chicken can be transformed into a delicious and easy meal.