Begin by crushing your choice of Christmas cookies or Oreos in a food processor until you achieve fine crumbs. Melt butter in a microwave-safe bowl, then combine it with the crushed cookies until evenly mixed. Firmly press this mixture into the bottom of a greased 9x13 inch pan to form a solid crust. Chill in the refrigerator for about 15 minutes to set while you prepare the filling.

In a mixing bowl, beat together 8 ounces of softened cream cheese and ½ cup of powdered sugar using an electric mixer until the mixture turns smooth and fluffy, approximately 2-3 minutes. Gently fold in 1 cup of whipped topping until fully incorporated. Spread this creamy filling evenly over the chilled cookie crust, smoothing it to the edges for a uniform layer.

In a separate bowl, whisk together two small boxes of instant pudding mix with 3 cups of cold milk until the mixture thickens, which should take about 2 minutes. Carefully spread the pudding layer over the cream cheese filling, ensuring each corner is filled.

Once the pudding layer is set, take the remaining 2 cups of whipped topping and spread it generously over the pudding layer. Use a spatula to create smooth, even layers, ensuring that the topping reaches the edges of the dessert.

Add festive flair to your No Bake Christmas Cookie Lush by drizzling with ¼ cup of caramel sauce or melted chocolate. Sprinkle with ¼ cup of chopped pecans for a crunchy texture, and add festive sprinkles or crushed candy canes for a holiday touch.

Cover the assembled dessert with plastic wrap and refrigerate for at least 6 hours, or ideally overnight. Uncover the dessert and serve.