You may have heard about this before, but I just tried it today and was really amazed. Thought I'ld post it.

Ingredients: 1 chocolate cake mix and 1 can Diet Dr. Pepper (I used cherry vanilla) - nothing else.

Bake as directed on the box.

You won't believe how moist this is. No eggs or oil. My mom tried it because my dad is trying to cut sugar and cholesterol. What she read suggested putting the cool whip (sugar free/fat free/whatever...) on top, but I liked it alone. No funky diet soda aftertaste or anything and I hate diet soda....cake mixes are always on sale for $1 (or less with coupons) and one can of soda is cheap, so it's a cheap dessert too.