WOW {Warm Oven Wednesday} Coca Cola Cake

In honor of my dad's 70th birthday I'm making this wonderful Coca Cola  cake! 

Cake:

2 cups sugar 

2 cups all-purpose flour 

1 1/2 cups small marshmallows 

1/2 cup butter or margarine 

1/2 cup vegetable oil 3 tablespoons cocoa 

1 cup Coca-Cola® 

1 teaspoon baking soda 

1/2 cup buttermilk 

2 eggs 

1 teaspoon vanilla extract

Frosting:

1/2 cup

 butter 

3 tablespoons cocoa 

6 tablespoons Coca-Cola 

1 box (16 ounces) confectioners' sugar 

1 teaspoon vanilla extract 

1 cup chopped pecans

Preheat oven to 350 degrees. In a bowl, sift sugar and flour. Add marsh- mallows. In saucepan, mix butter, oil, cocoa, and Coca-Cola. Bring to a boil and pour over dry ingredients; blend well. Dissolve baking soda in buttermilk just before adding to batter along with eggs and vanilla extract, mixing well. Pour into a well-greased 9- by-13-inch pan and bake 35 to 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 confectioners' sugar, blending well. Add vanilla extract and pecans. Spread over hot cake. When cool, cut into squares and serve with a scoop of vanilla ice cream.