This cake is just so great. Enjoy!
Reducing the pineapple and sugar mixture requires maintaining a medium heat for precisely 20 minutes to evaporate excess moisture without scorching the fruit sugars.
Refrigerating the assembled dessert overnight allows the starches in the pudding and cake to absorb moisture fully, yielding a cohesive texture. Store the finished pan covered in plastic wrap at or below 40 degrees Fahrenheit for up to three days.