Preheat the oven to 325°F (160°C). Line a 9 x 13-inch baking pan with parchment paper. Press the cookie dough into the bottom of the baking pan with your hand.
Place the Oreos on top of the cookie dough. Put half oreo pieces on the edges if needed.
Place the cream cheese in a mixing bowl and whisk until smooth. When it reaches a smooth consistency, add sugar, vanilla extract, and salt and continue mixing at high speed Add the eggs one by one and beat at a slow speed just until well combined.
Pour over the cookie base and smooth the top with a spatula.
Put the big and small Oreo crumble pieces on it and cover the pan with foil. Bake for 30 to 35 minutes until the center wobbles just slightly.
Let it cool down inside for at least 10 mins inside the oven, then let it rest for at least 3 hours outside the oven until it cools completely. You can leave it overnight if you wish.
Remove the cheesecake bars from the baking dish and slice them. Serve with caramel sauce, ice cream, or whipped cream on top.