This simplified version of our magical meringue tree uses shop-bought meringues assembled in a tree shape, then decorated. Stack the meringue nests, sandwiching them together with whipped cream. Use the mini meringues to build a tree shape around the stacked nests, sticking them on using more whipped cream. Decorate with melted white chocolate or white chocolate stars and broken-up peppermint candy canes, if you like, or serve with a berry compote.