In 1-quart saucepan, place 1 tablespoon soymilk and the butterscotch chips. Heat over low heat, stirring constantly, until chips are melted and mixture is smooth. Cool slightly.
Meanwhile, in medium bowl, beat 3/4 cup soymilk and the pudding mix with wire whisk until mixture is blended and thickened. Stir in melted chip mixture until well blended. Fold in 2 cups whipped topping.
To serve, spoon into individual dessert dishes; serve immediately or refrigerate until serving time. Just before serving, top with banana slices and additional whipped topping.