This does not last long, no matter where it is. Whether I take it to some sort of gathering or just for my family at home, it doesn't last long. Please be advised though, I call it million dollar because of it's richness, a little goes a long way. Hope you enjoy!!!
In a large mixing bowl, I use my stand mixer, place the milk, sweetened condensed milk, vanilla pudding mix and banana pudding mix and mix slowly first then increase the speed and mix until lumps are gone and the mixture thickens.
Next place 1/4 to 1/2 of the cool whip tub into the pudding mixture and mix on med/med high speed till well blended
Peel and cut the bananas into bite size pieces. Place the bananas into the pudding mixture and stir with mixer or by hand, either way will do the job.
Now take about two to three hand fulls of vanilla wafers and place in the pudding mixture and mix by hand with spoon till blended well. I have tried this step with the mixer and it just breaks the cookies up, but if you want broken cookies in the pudding that will work great too.
Now take whatever container your casserole dish or vessel of choice and start assembling as follows...
Place some wafers on bottom of bowl, pour pudding mixture over wafers, spread remaining cool whip on top of pudding. I always decorate the top with the left over wafers, but this is not necessary just fun.
Cover your bowl and place in refrigerator to cool and set completely for at least an hour, this will allow the pudding to set and the wafers to absorb the pudding and get soft and yummy. (sometimes my family doesn't allow for this step, it is still delicious)