Preheat your oven to 350 degrees. Start by preparing a 9×13 pan with a light coating of cooking spray. This will ensure that your cake comes out easily without sticking.
Next, spread both cans of the drained pineapple chunks and undrained crushed pineapple evenly in the bottom of the prepared pan. You'll want a nice, even layer to ensure every bite is full of that sweet, tropical flavor.
Now, sprinkle the light brown sugar evenly over the layer of pineapple. This will create a sweet caramelized topping as the cake bakes.
Evenly sprinkle the contents of the cake mix over the pineapple and sugar layers. Make sure to cover it completely for a uniform texture.
Drizzle the melted butter over the entire cake mix layer. This will help form a beautiful, crusty top as it bakes.
Place the pan in the preheated oven and bake for about 50 to 55 minutes. You’ll want to keep an eye on it, looking for a golden brown top. Your kitchen will begin to smell heavenly at this point!
Once it’s done baking, remove the pan from the oven and allow it to cool for about 10 minutes before serving. This cooling time helps the cake set and makes it easier to cut.
