In large mixing bowl, combine dry ingredients. In mixture, create 3 holes. Put oil in the first hole, vanilla in the second, and vinegar in the third. Cover with the water and mix thoroughly.
Place the batter in an oiled or nonstick 9 inch cake pan. Bake at 350 degrees for 35 minutes. Recipe makes one layer.
Cake batter can also be used for cupcakes...bake for 25 minutes.