Preheat oven to 325°. Line an 8"-x-8" baking dish with parchment paper with a 2" overhang. Press cookie dough into bottom of baking dish.
Top with a single layer of Oreos, breaking them up to fit if necessary, and set aside.
Make cheesecake layer: In a medium bowl using a handheld mixer or stand mixer using the paddle attachment, beat cream cheese until smooth. Beat in sugar, eggs, vanilla, and salt until fully combined. Pour over Oreo layer and smooth top.