Preheat the oven to 350°F (175°C).
Place the cookie dough in the freezer for 2–3 hours to make slicing easier.
Line a 13×9-inch baking pan with parchment paper or non-stick foil.
Slice half of the cookie dough into approximately ¼-inch slices.
Arrange the slices across the bottom of the prepared pan and gently press together into an even layer.
Bake for 10 minutes.
While the crust bakes, beat the softened cream cheese, egg, granulated sugar, vanilla extract, and optional lemon juice until smooth and creamy.
Remove the crust from the oven and immediately spread the cheesecake mixture evenly over it.
Slice the remaining cookie dough and arrange the slices across the cheesecake layer.
Return the pan to the oven and bake for 35–40 minutes, or until the top is lightly golden and the cheesecake is mostly set.
Allow the Chocolate Chip Cheesecake Bars to cool completely.
Refrigerate for at least 2 hours before slicing into bars and serving.