Begin by crushing 24 Oreo cookies into fine crumbs using a food processor or a zip-top bag and a rolling pin. In a mixing bowl, combine the crumbs with ½ cup of melted unsalted butter, stirring until well coated. Press this mixture firmly into the bottom of a 9x13 inch dish to create a smooth, even crust. Chill in the refrigerator for about 15 minutes while you prepare the filling.

In a large mixing bowl, beat 8 oz of softened cream cheese and 1 cup of powdered sugar together using an electric mixer on medium speed until smooth and creamy, roughly 2-3 minutes. Gently fold in 1 cup of whipped topping until just combined, ensuring not to deflate the mixture. Spread this fluffy cream cheese layer evenly over the chilled Oreo crust, smoothing it out with a spatula.

Following the package instructions, whisk together 2 cups of chocolate pudding mix with 3 cups of milk in a separate bowl until it thickens, about 2 minutes. Let it stand for 5 minutes to set. Once thickened, pour the chocolate pudding evenly over the cream cheese layer, spreading it out gently to maintain the layers of your Turtle Lasagna Dessert.

Drizzle a generous amount of caramel sauce over the chocolate pudding layer. You can use store-bought caramel or homemade for a gourmet touch. Spread the caramel evenly with a spatula, ensuring it seeps slightly into the chocolate layer for that signature turtle flavor.

Sprinkle 1 cup of chopped pecans evenly over the caramel layer, adding that delightful crunch synonymous with turtle candies. Gently press the nuts down using your palm to help them stick to the caramel and create a cohesive topping.

Cover your Turtle Lasagna Dessert with plastic wrap and refrigerate for at least 4 hours, though overnight chilling is ideal for the best flavor and texture.