vegan chocolate cake (for Aunt Jeanie)

1 1/4 cups flour
1 cup sugar
1/3 cup cocoa powder
1 tsp baking soda
1/2 tsp salt
1 cup water
1 tsp vanilla extract
1/3 cup vegetable oil
1 tsp white or apple cider vinegar

Mix it all up and bake at 350 for around 35 minutes in a small (8 by 8ish) baking pan. (It can be mixed and baked in the same pan.)