To make the filling, put the cream cheese, icing sugar and zest from 2 of the lemons in a large bowl, and beat with an electric whisk until smooth. Reserving 2 teaspoons of lemon juice ...
Line an 8- or 9-inch square pan with two perpendicular strips of parchment paper, leaving some overhang so baked lemon squares can be easily lifted from pan. In a large bowl, whisk together flour ...