01 -
Grab a big mixing bowl and whisk together the condensed milk and ice-cold water until smooth. Toss in the pudding mix and whisk fast until it’s lump-free. Cover it up and chill for about 4 hours until firm.
02 -
In another big bowl, beat the cream until it’s fluffy and soft peaks form. Add the marshmallow fluff and whip again until stiff peaks hold.
03 -
Carefully fold the whipped cream into the pudding a little at a time. Stir gently, keeping the mixture light and fluffy, until it looks blended with just a few streaks.
04 -
Take a 9x13 pan or large glass bowl and start layering: cookies on the bottom, banana slices, then a third of the cream mix. Do this two more times, finishing with cream on top.
05 -
Sprinkle crushed cookie chunks on top if you want. Let it sit in the fridge for at least 4 hours before serving.