Southern Humdinger Cake

Why This Southern Humdinger Cake Works

In the oven, the batter acts more like a thick banana bread than a light sponge cake, so it stays very moist. The crushed pineapple, mashed bananas, and oil all bring in a lot of moisture. As the cake bakes, the flour and eggs set up around that moisture and hold it in, instead of drying out. Sugar melts and spreads through the batter, so the crumb stays soft instead of crumbly. Pecans and coconut stay suspended in that thick batter, so they don’t all sink to the bottom.

During baking, baking soda reacts with the natural acid in the pineapple and the brown bits on the edges start to firm up. That gives the cake enough structure to stack three layers without collapsing, even though it is very tender. Once the layers cool, the cream cheese and butter frosting goes on smooth and then firms up in the fridge. Chilling lets the cake settle and tighten a bit, so the slices hold together but still taste soft and rich.

Mistakes To Avoid

Letting the cake layers go into the oven while the batter is overmixed can make them come out tough and heavy. All the stirring works the flour too much, so instead of a soft crumb, the cake bakes up dense and a little rubbery, with less rise than expected.

Pouring off the juice from the crushed pineapple changes the batter in a bad way. The recipe counts on that liquid for moisture, so the layers bake up drier and more crumbly, and the cake can seem oddly stiff instead of rich and moist.

Stacking and frosting the layers while they are even slightly warm often leads to a sliding, lopsided cake. The heat softens the cream cheese frosting until it turns loose and gooey, so it squeezes out the sides and the layers can shift or crack.

Letting the cream cheese and butter stay cold when making the frosting keeps them from blending smoothly. Cold chunks don’t whip well, so the frosting stays lumpy and thick, and it’s hard to spread a clean, even layer on the cake.