Has anyone done this? If so, what did you do and how did it turn out?

i have done it before with her more basic cakes (ya know, like the devils food, basic yellow, etc) and it turned out fine. i can't speak to anything more than the basic ones

I always use a cake extender recipe but it is not from the cake dr. I got it at Wilton.com I think. I love it, it makes all my cakes extra moist and they always bake over the lip of the pan, (I mean taller not over as in a spill). and they seem lighter in texture too. It also makes a little extra batter. Here it is if you want to try it.
Extender for any cake mix
1 cup sugar
1 cup flour
1 tsp. vanilla
1/3 tsp. salt
8 oz of sour cream or yogurt
1 tsp. baking powder.
Follow the cake mix directions (put all ingredients from cake mixdirections in mixer as stated on box)and then add the extender. Use extered for each cake mix used.

hmmm....no eggs?

deijha, I have a question for you. Do you feel that the baking powder is a huge factor for the exetender recipe? I've tried the recipe from this site and loved it, but I'm curious about the baking powder and it's effect on the recipe. Thank you

I've wondered too about adding baking powder to the extender on this site. I'm curious about the lack of an egg also, in deijha's extender. (Although I didn't think about it until sunlover mentioned it. )

deijha: Have you used your extender with a cake mix dr. recipe?