Layer the dry ingredients in an ungreased 13" x 9" x 2" baking pan.
Whisk all the dry ingredients in the pan until distributed equally.
Make 3 holes in the pan, the middle one being the largest.
In the largest hole, put the oil. In the two smaller ones, place the vanilla and vinegar.
Pour water over this then whisk all ingredients until well combined, making sure corners and edges are free of dry ingredients. Its consistency should appear like normal cake batter.
Bake for 35 minutes in a 350 degree oven.
