Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking dish. I promise, it’s the only clean thing you'll do here!
Spread half of the crushed Oreos evenly across the bottom of the prepared baking dish. These are your "lasagna noodles." Don't eat too many while you’re at it.
Mix the chocolate cake mix according to the package instructions and pour it over the crushed Oreos. Smooth it out with a spatula—yes, you’ll need a utensil for once.
In a separate bowl, whisk together the instant chocolate pudding mix with 2 cups of milk until it thickens. Pour this luscious chocolate pudding over the cake mix layer. No one said this would be tidy!
Sprinkle chocolate chips and optional nuts over the pudding layer because you can never have too much chocolate.
In another bowl, beat the softened cream cheese until smooth, then add the powdered sugar and beat until combined. Fold in half of the whipped topping and spread this creamy layer over the chocolate chips.
Sprinkle the remaining Oreos over the top. Think of it as the final flourish, the crown jewel of your lasagna!
Bake for 40-45 minutes, until the cake is set and the layers have melded into a gooey, chocolatey masterpiece.
Let it cool for at least 30 minutes before spreading the remaining whipped topping over the top. This is your "frosting," but let’s be honest—you'll eat it by the spoonful first.
Chill in the fridge for at least 2 hours before serving, if you can wait that long. Slice, serve, and prepare for applause!