It can also be stored in the freezer for up to a month. https://www.bbc.co.uk/food/recipes/chickenandmushroompi_89034 This would be great frozen, and would last 4-6 months in the freezer. This simple to make dish takes only a short while to prepare if you use shop bought pastry and it is delicious and cheap because it uses leftover chicken. Storing leftover chicken pie: Leftover pie tastes delicious! Store it tightly covered in the fridge, and preheat in the oven or microwave within 3-4 days. https://www.saga.co.uk/.../recipes/meat/chicken/chicken-leek-mushroom-pie C. Recipe by: CookRobin Hampshire, England ... Chicken mushroom pie with puff pastry Alternatively if you are using leftover roast chicken simply use 500ml plain chicken stock. Defrost overnight … Chicken leftover pie 45 min. https://www.goodtoknow.co.uk/recipes/chicken-and-mushroom-pie However, I have to admit, these days we are having to roast two chickens to ensure we have enough leftover chicken meat for another meal. Leftover Chicken Pie is generally made of whatever chicken meat is left over after a roast chicken dinner. Method: Start by removing any bones and skin from your leftover chicken pieces. Leftover Chicken Pie. Leftover cooked chicken will last up to 4 days in an airtight container in the refrigerator.