Coca Cola Cake

1 c. Coke, not diet!
1/2 c. oil
1 stick butter
3 T. cocoa
2 c. sugar
2 c. SR flour
2 eggs
1/2 c. buttermilk*
1 t. vanilla
Frosting:
1 stick butter
3 T. cocoa
6 T. milk
1 t. vanilla
3 3/4 c. powdered sugar

Preheat oven to 350. In a saucepan, combine coke, oil, butter, and cocoa. Bring to a boil. In a bowl, combine sugar and flour. Pour the boiling coke mixture over flour mixture and beat well. Add the eggs, buttermilk, and vanilla and beat well. Pour into sprayed 9x13 pan and bake 20-25 minutes.Cool cake 10 minutes before frosting. Make frosting while cake is cooling. Combine butter, cocoa and milk in saucepan. Heat until butter melts. Beat in remaining ingredients and pour over warm cake. Enjoy!

*1 T. lemon juice or vinegar mixed with milk is a good substitute for buttermilk. You can also use sour cream thinned with a little milk, or water.