Mom's Buttermilk Chocolate Cake

Cake:
2 c. flour
2 c. sugar
1 stick butter
4 T. cocoa
1/2c. cold water
1/2 c. oil
2 beaten eggs
1/2 c. buttermilk
1 t. soda
1 t. vanilla
Frosting:
1/2 c. chocolate chips
1 stick butter
4 T. cocoa
1 box powdered sugar
1 t. vanilla
6 T. milk

Preheat oven to 400 degrees. Bring butter, cocoa, cold water, and oil to a boil. Remove from heat and add flour and sugar. Stir in eggs, buttermilk, soda (omit if using self rising flour), and vanilla. Do not beat.Pour in sprayed pan and bake for 20 minutes. Prepare frosting while cake is cooking. Pour over hot cake.