Super Easy Low Calorie Cake [Recipe]

I spotted this recipe floating around facebook the other day and just had to make it. It was the easiest cake I have ever made and come to find out it is on the low calorie side of deserts. Just 5 points on weight watchers if you have it with light cool whip. Here's the recipe:

Take a box of Angel Food Cake mix (just the contents of the box, no need to follow the directions on the box), & combine it with a 20 ounce can of crushed pineapple in its own juice.
(No need to use a mixer, just stir it with a spoon) When you do this, something magical happens.
The mixture starts to froth & it turns into an amazingly airy, fluffy bowl of deliciousness right before your eyes.
Once it's all mixed up,grease and simply pour it into a 9 x 13 cake pan & bake 350 for 30 minutes

That's it easy peasy. I added a 1/2 cup of coconut and it was delicious.