Air Fryer Pineapple Upside Down Cake is one of those classic desserts I love making because the result always looks so much more impressive than the effort involved, and the air fryer gets it perfectly caramelized in a fraction of the oven time. The batter bakes into a soft, moist, coconut-speckled cake with warm nutmeg throughout, and underneath is a deeply caramelized layer of brown sugar and pineapple that becomes the gorgeous sticky top the moment you flip it. I make this for family gatherings, Mother's Day, Easter, and potlucks because it travels well, serves beautifully at room temperature, and always gets the best reaction. It keeps well covered at room temperature for up to 2 days or in the fridge for up to 4 days.