3 c. flour
6 tbsp. cocoa
2 tsp. baking soda
2 tbsp. vinegar
3/4 c. oil
2 c. lukewarm water
2 c. sugar
1 tsp. salt
2 tsp. vanilla

Stir all ingredients together in 9x13 baking pan. Bake at 350 degrees for 40 minutes.