We all love a banana bread ... You will know the cake is ready when a skewer inserted comes out clean. Meanwhile, make the caramel by melting the sugar in an even layer in the base of a pan ...
Stir in 1 cup COOL WHIP; spread over banana layer in pan. Top with remaining COOL WHIP. Refrigerate 5 hours. Slice remaining 2 bananas just before serving; arrange over dessert. Top with nuts.