Reserve some larger Oreo chunks for texture contrast while crushing others into fine crumbs; this creates both structural integrity and delightful bite throughout each layer.

Refrigerate the assembled cake for at least 2 hours before serving to allow layers to set properly and flavors to meld, resulting in cleaner slices and superior taste.

Whisk the instant vanilla pudding with milk for exactly 2 minutes until it reaches soft-serve consistency—not too thick or too thin—to ensure even distribution between layers.

Gently fold whipped topping into pudding mixture using a spatula to maintain airiness and prevent deflation, which keeps the dessert light and fluffy rather than dense.

Lightly toast mini chocolate chips in a dry skillet for 1-2 minutes before sprinkling on top to intensify their flavor and add a subtle depth that elevates the entire dessert.