Iowa State Savings Bank customers got a sweet surprise when they stopped in to the main Knoxville office today. The bank is serving cake to everyone who stops in today for a “Banking with Us is a Piece of Cake” event. David Hoke said typically they serve popcorn on Fridays but this was an extra treat for their customers that they randomly decided to surprise them with. Bank employees came up with the idea and baked all of the different cakes themselves. Hoke says they received great feedback from customers as everyone seemed excited about the cake. He says they are thankful their customers and is glad they have a sweet tooth.