Ingredients cake: 1 c. butter, room temp 3 c. light brown sugar, packed 4 eggs 2 tsp. vanilla 3/4 c. unsweetened cocoa powder 1 T. baking soda 1/2 tsp. salt 3 c. sifted cake flour 1 1/3 c. sour cream 1 1/2 c. hot coffee frosting: 8 T. butter, room temp 16 oz. cream cheese,…