In a large bowl, thoroughly mix the cream cheese, powder sugar, and cool whip together until you get a smooth consistency.
Spread the mixture over the graham cracker pie crust. Start with a small-ish dollop of the mix in the center and work it out from there to keep from accidentally tearing up the crust.
Peel and slice bananas and spread the slices over the mixture in the pie crust.
In a separate large bowl, mix both packages of french pudding with the milk. Pour the pudding over the banana layer of the pie.
Spread a layer of cool whip on top of the pudding layer of the pie. If you’d like, sprinkle cinnamon sugar over the top. Cover and place in the freezer until it sets.