Instructions

  1. Set oven to 350°F (oven rack to second-lowest position).
  2. Line bottom of a 17 x 11-inch jelly-roll pan with parchment paper.
  3. For the cake; in a saucepan combine the butter with brewed coffee and sifted cocoa powder; bring to a boil then simmer for about 30 seconds, remove from heat then place in a large heat-proof or plastic bowl.
  4. Add in sugar and vanilla whisk until all the sugar granules are dissolved; cool for about 20 minutes.
  5. Whisk in eggs and sour cream together until well blended then add to the chocolate mixture; mix until blended.
  6. In a small bowl mix together flour with baking soda and salt; add to the chocolate batter and mix until combined (batter will be thin).
  7. Mix in chocolate chips.
  8. Pour the batter into prepared jelly-roll pan.
  9. Bake for about 18-20 minutes (watch closely this cake takes very little time to bake!).
  10. Cool cake completely before slicing.
  11. For the frosting; cream the butter in a medium bowl.
  12. Add in desired amount of cocoa powder, vanilla and confectioners sugar and cream; beat using an electric mixer until desired consistancy is achieved (you may need additional cream or confectioners sugar).
  13. Frost cooled cake.