Yes, you can freeze date cake for up to three months. To do so bake the cake but do not pour the caramel sauce overtop. Instead let the cake cool completely, remove it from the pan, wrap tightly in plastic wrap and store in the freezer. Make the caramel sauce the day you plan to serve your cake. After defrosting the cake reheat in in the oven (instructions below) then pour the sauce over top and serve with vanilla ice cream.