Total Time
40mins
Prep 20 mins
Cook 20 mins

This cake may be served warm or at room temperature.

Ingredients Nutrition

Directions

  1. Set oven to 375 degrees (second- lowest oven rack).
  2. For the cake; grease and flour a 11 x 15-inch sheet pan.
  3. In a large bowl combine the flour with sugar; set aside.
  4. In a saucepan combine 1/2 cup butter, shortening, 1/4 cup sifted cocoa powder and 1 cup water; bring to a boil.
  5. Pour the cocoa/butter mixture into the flour mixture then add in sour cream or buttermilk, eggs, baking soda and vanilla; mix until smooth.
  6. Add/mix in the chocolate baking chips.
  7. Pour into greased and floured baking sheet.
  8. Bake for about 20-22 minutes or until cake tests done.
  9. Start the frosting about 5 minutes before the cake is done.
  10. In a saucepan combine the butter with cream and cocoa powder; bring just to a simmer, then remove from heat; immediately stir in vanilla and confectioners sugar; whisk until smooth.
  11. Pour the frosting over hot cake.