Place cream cheese and sour cream in the bowl of a stand mixer and beat until smooth.
Beat in the condensed milk, eggs, vanilla and salt until the mixture is well blended. Stir in the lemon juice.
Fill each jar about ¾ full of the cheesecake mixture, leaving about ¼-½ inch at the top, as they do puff up a little. Also you need place for your toppings.
Place the baking pan with the jars into the oven and carefully fill the pan with hot water about halfway up the jars.
Bake for 30 minutes, or until the tops of the cheesecakes are just set and golden.
Remove the jars from the water bath with tongs and place on wire rack to cool.
Refrigerate for at least 3 hours before serving.