- Whisk Borden Milk and pudding mix in a large bowl for 2 minutes. Let stand for 2 minutes. Whisk in sour cream and vanilla. Fold in three-fourths of the whipped topping.
- Top with a third of the banana slices and pudding mixture. Repeat layers twice as desired. Top with remaining whipped topping. Refrigerate for at least 1 hour. Garnish with reserved vanilla wafers.