Preheat oven to 350 degrees F.
Grease an 8x8 baking dish
Mix first 5 dry ingredients in large bowl
Make 3 depressions in dry ingredients – two small, one larger.
Pour vinegar in one depression, vanilla in the other and the oil in third larger depression. Pour water over all. Mix well until smooth.
Pour into prepared pan
Bake on middle rack of oven for 35 minutes. Check with toothpick to make sure it comes out clean. Cool.
Note: Oven baking times may vary, be sure to check your cake to make sure you do not over bake.