1Preheat oven to 350 degrees.Grease and flour 3(8 inch)pans.
2In a large bowl,combine cake mix,milk,eggs,oil,instant vanilla pudding mix,granola bar pieces and coconut extract.Beat on low speed until blended.Scrape bowl and beat 4 minutes on medium speed.Pour batter into prepared pans.Bake in the preheated oven for 20 to 25 minutes,or until a toothpick inserted inserted into the center of the cake comes out clean.Allow to cool.
3To make the frosting:In a large bowl,beat the peanut butter,cream cheese,white sugar and confectioners' sugar until smooth.
Fold in the whipped topping,peanut butter chips and chopped chocolate.
Spread between layers and on top and side of cake.
Drizzle caramel ice cream topping over the cake.