Mix the contents of the angel food cake mix ( do not follow the box directions or add anything) with the can of crushed pineapple & the juice.
No need to use a mixer, just stir it with a spoon.
The mixture starts to froth & it turns into an amazingly airy, fluffy mixture.
Once its all mixed, grease & simply pour into a 9"x13" cake pan.
Bake at 350 for 30 mins.