In a large bowl whisk together the instant pudding mix and milk until smooth, about 1-2 minutes. Let rest for 5 minutes to thicken.
Once the pudding has thickened, fold in the cool whip. You want to fold the cool whip in instead of stirring to keep your mixture thick.
Add the bananas and crushed vanilla wafers by folding them in.
Store in the fridge in an airtight container if not immediately serving. (See notes.)
Serve with extra sliced bananas and crushed vanilla wafers on top!
