Yes! I recommend storing the cookies and filling separately until ready to serve. Once the cookies have cooled completely, place them in an airtight container and store at room temperature up to 5 days. If storing for longer, I recommend freezing the cookies. Allow to thaw at room temperature prior to filling and serving.u003cbr/u003eu003cbr/u003eTo store the peppermint filling, place in a jar with a tight fitting lid or an airtight container and store in the refrigerator. Bring to room temperature prior to using. Stir well then use to fill the cookies.