Place Oreos in a sealed bag and crush with a rolling pin to get varied chunk sizes—some fine crumbs for texture, some larger pieces for delightful bites throughout the cake.

Refrigerate the dump cake for at least 2-3 hours before serving to allow the pudding layer to fully set and create distinct, beautiful layers that hold their shape when plated.

Whisk the instant vanilla pudding with milk for exactly 2 minutes until it reaches soft-peak consistency, preventing it from becoming too thick and creating an overly dense middle layer.

Use a spatula to gently fold the whipped topping into the pudding mixture rather than stirring, which preserves air pockets and creates a lighter, fluffier texture in the finished dessert.

Lightly toast the mini chocolate chips in a dry skillet for 2-3 minutes before adding to the topping layer to intensify their chocolate flavor and prevent them from sinking during storage.