How to Make It
Heat oven to 325° F. In a food processor, process cream cheese, sugar, sour cream, eggs, lemon juice, vanilla extract, and salt until smooth.
Pour into the piecrust and bake until the center is set but still slightly wobbly, 40 to 50 minutes. Let cool, then chill until firm, 4 to 5 hours. Top with lemon zest before serving.