2 1/2 c. flour
1 1/2 c. sugar
3 tsp. baking soda
1/2 c. baking cocoa
1 1/4 c. mayonnaise
1 1/2 c. hot water
1 tsp. vanilla

Mix all cake ingredients together and pour into greased tube pan. Bake at 350 degrees for about 35-40 minutes or until done (when a toothpick comes out clean).

PEANUT BUTTER FROSTING:

2 1/2 c. powdered sugar
1 tsp. vanilla
1 c. peanut butter
Add enough milk to mix to the right consistency

Pour over cool cake.