Mix together graham crackers, butter and sugar and press firmly in a 9x13 pan. In a medium size bowl, wisk together cool whip, sour cream, and instant vanilla pudding. Take 1/2 of this mixture and spread over the graham cracker crust. Spread the sliced bananas over this and top with the reminder of the cool whip mixture. Refridgerate for at least 1 hour before serving.
Not a NESTLÉ®-tested recipe.