Box cake gets a bad rap, and its true that if you follow the instructions on the back you're going to get a cake that is probably OK at best. But by switching out a few of the added ingredients, you can change the whole composition of the cake, creating something that is ultra moist, rich and bakery-worthy.
Foolproof Banana Bread
Banana "bread" has always felt like a misnomer to me because its basically cake without the frosting. And I'm not complaining. I absolutely love banana bread and other quick breads which give you all the satisfaction of cake with a little bit less of the sugar and fat.