To make the filling, put the cream cheese, icing sugar and zest from ... and transfer to a serving plate. Place the lemon curd in a bowl and loosen with just enough of the remaining lemon juice ...

Lemon curd pairs marvelously with berries, fig jam, or cream cheese. You can use French bread, brioche, challah, or white bread, or choose to lean further into the tartness with a loaf of sourdough.