Rich Chocolate Tray Bake with Feathered Icing

Makes 21 slices

  1. Grease a 30 x 20 cm 12 x 8 in baking pan and line the bottom with parchment paper.
  2. Preheat the oven to 350°F.
  3. Measure the cocoa into a bowl, add the boiling water and mix until smooth.
  4. Add the butter and beat into the cocoa until smooth, then add the sugar, eggs, milk, flour, and baking powder and mix until combined.
  5. Pour into the prepared pan and spread evenly.
  6. Bake in the oven for 30-35 minutes until well risen, just firm to a touch and shrinking away from the sides of the pan.
  7. Leave to cool in the pan for 10 minutes then turn out on to a wire rack and peel of the paper.
  8. Brush the top of the cake with the warmed jam and leave to cool completely.
  9. Warm the cream in a small pan until hot, then add the milk chocolate and stir until completely melted and smooth.
  10. Leave to cool a little so that it is a thick pouring consistency (this shouldn't take long but depends on room temperature).
  11. Pour the icing over the cake, spreading it out with a palette knife to cover the cake completely.
  12. Melt the white chocolate in a double boiler.
  13. Place the melted chocolate into a small piping bag and snip the end off the bag.
  14. Pipe lines down the length of the cake about 1 cm 1/2 in apart.
  15. Drag a toothpick through the white chocolate in opposite directions across the cake to give a feathered effect.

Berry, Mary. Mary Berry Cooks. Page 294-296`. London: BBC Books, 2014.