The best banana cakes are those that are well spiced and frosted with a heavy layer of cream cheese frosting. Our ratio of cinnamon, ginger, and vanilla to banana imbues each bite with the most balanced and decadent mix of flavors. A step up from a traditional banana bread, this is very much a cake—depending on the butter-sugar mixture forming the batter's base and shaped in an easy-to-slice rectangle. The incorporation of cornstarch into the dry ingredients helps to make the crumb airy and velvety-soft while also preventing the cake from becoming too liquid from the moisture in the bananas. We also use a full teaspoon of salt to match the sweetness of the cake and enhance the delicate flavors in the cake. Lastly, we use a classic cream cheese frosting from soft cream cheese, butter, salt, vanilla, and powdered sugar. Once the powdered sugar is incorporated, beat the frosting for 5 minutes to make for a lightened airy frosting, ideal for creating a solid half-inch layer that's easy to swirl on top. Decorate the perimeter of frosting with walnuts to nod to the walnut pieces inside the cake, and prepare to serve your new favorite banana recipe.