Chocolate Mayonnaise Cake

Ingredients
1 cup mayonnaise
1 cup warm water
3 tablespoons cocoa ( heaping )
1 cup sugar
2 cups flour
2 teaspoons baking soda
1 teaspoon vanilla

Directions
Preheat oven to 350 degrees.

In a large mixing bowl, combine flour, cocoa, baking soda, and sugar. Add mayonnaise, warm water and vanilla; stir until well blended. Do not use electric mixer. Pour batter into greased loaf pan. Bake for 30 to 40 minutes or until tester comes out clean. Cool on wire rack. Frost with a 1/2 recipe of Vanilla Butter Frosting; top with chopped walnuts.