Cake (ingredients 1-11): In saucepan, melt butter, water, oil, and cocoa. Boil for 1 min. Add dry ingredients. Add vanilla, eggs, and buttermilk. Pour into greased sheet cake pan and bake 15 to 20 min at 350 degrees.
Frosting (ingredients 12-15): In saucepan, melt butter, sugar, and milk. Boil for 1 min. Take off heat and melt chocolate chips in the mixture.