2 c. sugar
2 c. self-rising flour
1/2 c. (1 stick) butter
1/2 c. oil
3 tbsp. cocoa
1 c. coca cola
1/2 c. buttermilk
2 eggs
1 tsp. vanilla
1/2 c. sm. marshmallows

Mix sugar and flour in large bowl and set aside. In saucepan mix butter, oil, cocoa and coca cola and bring to a boil. Pour over sugar and flour mixture and mix well. Add the buttermilk, eggs, and vanilla. Mix well. Stir in marshmallows. Pour into prepared baking pan 9 x 13 inches and bake at 350 degrees for 45 to 50 minutes.

TOPPING:

1/2 c. butter
3 tbsp. cocoa
6 tbsp. coca cola
1 box confectioners' sugar
1 tsp. vanilla
1 c. nuts, chopped

Mix butter, cocoa and coca cola in a saucepan and bring to a boil. Remove from heat and add sugar, vanilla and nuts. Spread frosting on cooled cake.