Cake with no butter or oil, is there such a thing?

I need to make a cake if possible, but have no veg oil or butter and can't get out to the shops to get any.

Is there ANYTHING I can make?

The fattiest thing I have is probably peanut butter
I do have a little olive oil.
Can anyone suggest anything at all? Even non cake, another type of treat?

Oh, I have natural yoghurt too.

http://sakurambokitchen.blogspot.co.uk/2007/10/butter-free-oil-free.html


How much oil do you have? This needs 125ml
http://www.mylittleitaliankitchen.com/butter-free-yogurt-cake-with-apple-and-olive-oil/

http://www.caramelwings.in/2013/01/no-oilbutter-fijian-honey-cake.html

http://www.reciperoll.com/2012/02/sponge-cake-without-using-butter-or-oil.html

A huge caveat that I've not tried any of these out!!!

Yep, just google "fat free cake" One recipe here - http://www.mamtaskitchen.com/recipe_dis ... p?id=10596

Thanks ladies

Rice crispie cakes!