Mix the instant vanilla pudding with half-and-half and sweetened condensed milk, then refrigerate for 10 minutes before folding in whipped topping to ensure a perfectly thick, creamy texture that won't separate.

Add banana slices as the final layer just before serving to prevent them from browning and becoming mushy, preserving their fresh texture and preventing liquid absorption into the cookies.

Briefly toast the vanilla wafers in a 300°F oven for 3-4 minutes to enhance their buttery flavor and create a slight crunch that resists softening longer when surrounded by the creamy pudding mixture.

Add the sour cream (1/2 cup per standard recipe) to cut through the sweetness of condensed milk and caramel, creating a more sophisticated, balanced dessert that prevents cloying aftertaste.

Swirl caramel sauce between layers rather than mixing it throughout to create beautiful ribbons of flavor and maintain distinct taste pockets instead of uniform sweetness throughout the pudding.