When I make a chocolate cake with the extender recipe, I always use cocoa to replace 1/3 of however much flour the recipe itself calls for. It makes a better chocolate cake that way. (just using flour and no cocoa makes it too "light" of a chocolate cake for my taste) For example: if it calls for 1 cup of flour, I would use 2/3 cup flour and 1/3 cup cocoa. Hope that helps!
I made chocolate cupcakes and used the extender with some cocoa in it. Didn't add extra oil and they turned out really great. Gave me about 9 extra cupcakes if I remember correctly.
Diane
I do the same as above...2/3c flour and 1/3c cocoa. I also replace the water with buttermilk and the sour cream with pudding mix.
Can someone please explain what is the extender 
is it something you buy, or something you mix Im new here and I bake a lot of chocolate cakes if it will help me get more batter Im in 
. Boy, have I learned stuff just reading all the posts THANK YOU !! 
The extender recipes are ingredients you add to a regular box cake mix to make it taste a little more like scratch. Go to the 'recipes' at the top of the page, type in 'extender' in the 'search' box. I never knew about it till this site and now, I will NEVER make another box cake without it!!!
Can someone please explain what is the extender
is it something you buy, or something you mix Im new here and I bake a lot of chocolate cakes if it will help me get more batter Im in . Boy, have I learned stuff just reading all the posts THANK YOU !!
Some other new ideas can be found by checking out The Cake Mix Doctor set of cookbooks by Anne Byrn. I have gotten lots of clues by reading her books.
Character pans come out looking so much nicer if you use an extender. Just gives them that extra bit of height to make them look nicer.
Diane
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