For the raspberry and lemon layered dessert, break the butter cookies into small pieces and mix with the rum. Lightly whip the whipped cream and then mix it with curd, the lemon zest as well as the two sugars.
Stir the lemon curd until smooth. First divide the cookies among 4 glasses, then add a layer of lemon curd and a layer of whipped cream on top. Finally, spread the fresh raspberries on the raspberry-lemon layer dessert.