Often egg yolks are left over after making meringue, but here they’re used to make lemon curd and to give a luxurious filling. This recipe makes more lemon curd than you need to fill the roulade.

A mixed berry pie in a dish next to a bowl of berries and a mini mixed berry pie. - OlgaBombologna/Shutterstock Lemons are ...

Add the sugar, egg yolks and the whole egg, then add the lemon zest and juice and the vanilla and continue to whisk until everything is combined. Pour the cheesecake filling onto the biscuit base.