Preheat oven to 350 degrees.

Grease and flour cake pan. This will make (1) 9×13 or (2) 8″ round.

Mix dry ingredients well in a bowl.

With an electric mixer at low speed or I just use a whisk, combine mayonnaise, vanilla and water until smooth.

Mix in dry ingredients until just mixed.

Pour batter into cake pans. Bake for 30 minutes.

Cool and frost!