1 1/2 c. flour
1 c. sugar
1/2 c. cocoa
1 tsp. baking soda
1/2 tsp. salt
1 tsp. vanilla
1 1/2 tsp. vinegar
1/2 c. (1 stick) melted butter
1 c. water

Bake in a 350°F oven for 30 to 35 minutes.