CAKE:
2 cups sugar
2 cups all-purpose flour
1½ cups small marshmallows
½ cup butter or margarine
½ cup vegetable oil
3 tablespoons cocoa
1 cup Coca-Cola
½ cup buttermilk
1 teaspoon baking soda
2 eggs
1 teaspoon vanilla extract
FROSTING:
½ cup butter
3 tablespoons cocoa
6 tablespoons Coca-Cola
1 (16-ounce) box confectioner’s sugar
1 teaspoon vanilla extract
1 cup chopped pecans
Preheat oven to 350 degrees. In a bowl, sift sugar and flour. Add marshmallows. In a saucepan, mix butter, oil, cocoa, and Coca-Cola. Bring to a boil and pour over dry ingredients. Blend well. Add buttermilk, baking soda, eggs and vanilla extract, mixing well. Pour into a well-greased 9- by 13-inch pan. Bake 45 minutes. Remove from oven and frost immediately.
To make frosting, combine butter, cocoa and Coca-Cola in a saucepan. Bring to a boil and pour over confectioner’s sugar, blending well. Add vanilla extract and pecans. Spread over hot cake. When cool, cut into squares and serve.