Best Chocolate Bars

Steps

1. For the bar base: Bring to a boil the butter, shortening, cocoa, and water. In a separate bowl, mix together sugar, flour, butter, milk, eggs, soda, cinnamon, and vanilla. Add the chocolate mixture and mix well with a mixer. Pour into a large greased and floured jelly roll pan. Bake for 20 minutes at 400 degrees.
2. For the frosting: Bring the butter, cocoa, and milk to a boil, then cool. Add powdered sugar, mix to the right consistency, and add vanilla. Spread the frosting on the cooled cake.