01 - Preheat the oven to 325°F. Line an 8x8-inch baking pan with parchment paper, leaving an overhang on the sides for easy removal.
02 - Combine graham cracker crumbs, sugar, and melted butter in a medium bowl. Press the mixture firmly and evenly into the bottom of the prepared pan. Bake for 8 minutes, then let cool slightly.
03 - In a large bowl, beat cream cheese until smooth. Add sugar and mix well. Incorporate eggs one at a time, then blend in vanilla extract, sour cream, flour, and salt until creamy and uniform.
04 - Pour the cheesecake filling over the cooled crust and spread evenly with a spatula.
05 - Bake for 25 to 27 minutes until the center is set but still slightly wobbly.
06 - Remove from oven and allow to cool to room temperature. Refrigerate for a minimum of 2 hours until fully chilled.
07 - Use the parchment paper overhang to lift the bars from the pan. Cut into 16 squares and serve.