3 c. flour
Here's one that tasted pretty good. I made a frosting with powdered sugar, cocoa, and rice milk (I think water would work, too.)
Wacky Cake (mix and bake in the same pan)
2 c. sugar
6 T. cocoa powder
2 t. baking soda
1/2 t. salt
1/2 c. oil
2 T. vinegar
2 t. vanilla
2 c. cold water
In an ungreased 9 x 13 nonstick cake pan, sift all dry ingredients together. Make 3 holes of graduated sizes in pile of dry ingredients. In the largest hole, put the oil; in the medium hole, put the vinegar; in the smallest hole, put the vanilla. Cover all with the 2 cups cold water. Using a fork, stir well, making sure all dry ingredients are mixed well. Bake at 350 degrees for 25 minutes.