These scones really are best eaten the moment they are made. However, if you do find yourself with some leftovers they will keep in an airtight container for up to 2 days but they will dry out quickly. You can freeze them without the additional Biscoff drizzle on top. Just allow them to cool completely. To serve, thaw them and reheat in the oven at 120oc for 5 - 10 minutes until warm all the way through and starting to crisp up on the edges.