Freezing leftover Chicken Kiev is not recommended, but you can freeze this before cooking on the day they are made. To do this, prepare the recipe up to the point that the chicken is coated in breadcrumbs. Freeze individual chicken kievs (with toothpicks removed) then store them in a vacuum bag. If you don't have a vacuum sealer, wrap the individual chicken kievs in plastic wrap and place them all in a freezer bag with as much air removed as possible. These will maintain their quality for up to 3 months. After that, they will be subject to freezer burn and decreased quality.