Why This Recipe Works
We made this elaborate and impressive-looking dessert more approachable by reworking the meringue and buttercream, making them simpler and more foolproof. We swapped the traditional individually piped layers of meringue for a single sheet that was trimmed into layers after baking, and we shortened the usual 4-plus hours of oven time by increasing the oven temperature. While many recipes call for a Swiss or French buttercream made with a hot sugar syrup, we opted for a German buttercream. With equal parts pastry cream and butter, this option required no hot syrup and it enabled us to use up the egg yolks left over from the meringue.