Prepare the Baking Dish by lining it with parchment paper, leaving overhang for easy removal, or lightly greasing it.
Make the crust by combining graham cracker crumbs, granulated sugar, and melted butter in a mixing bowl until well coated. Press this mixture into the bottom of the prepared baking dish.
Prepare the cheesecake layer by beating softened cream cheese until creamy, then mixing in powdered sugar, sour cream, and vanilla extract until smooth. Spread the cheesecake mixture evenly over the crust.
Make the cookie dough layer by beating softened butter with brown sugar and granulated sugar until light and fluffy, then mixing in vanilla extract. Gradually add the heat-treated flour and a pinch of salt, mixing until combined. Stir in chocolate chips.
Assemble the bars by crumbling the cookie dough mixture over the cheesecake layer and gently pressing it down with your hands or a spatula.
Chill the bars by covering the dish with plastic wrap and refrigerating for at least 2 hours until firm.
Serve by lifting the bars out using the parchment paper overhang, cutting into 9 squares, and optionally sprinkling additional chocolate chips on top.