How to make chocolate cake with walnuts

• Lightly chop the walnuts, transfer them to a baking sheet and bake at 180 degrees (top/bottom heat) for approximately 8-10 minutes - be careful not to burn them! Set aside to cool.
  65 g walnuts
• Break the chocolate into pieces and melt it in a bain-marie - pour a little water into the bottom of a pot and bring it to a boil, place a heatproof bowl with the broken chocolate over the pot and heat it until it melts.
  100 g dark chocolate
  
• Cool the chocolate.
• Cream the softened butter with sugar until fluffy.
  150 g butter, 150 g powdered sugar
  
• Meanwhile, sift the flour together with the baking powder through a sieve.
  75 g wheat flour - all-purpose, 2 teaspoons baking powder
  
• Add the eggs one by one to the butter mixture, mixing briefly after each addition.
  2 eggs
  
• Add the flour to the butter mixture and mix briefly - just until combined.
  
• Add the cooled chocolate to the batter and gently mix.
  
• Finally, add the chopped toasted walnuts (65 g) and mix with a spatula.
  
• Transfer the batter to the prepared pan.
• Arrange walnut halves on top.
  about 50 g walnuts
  
• Bake the cake at 180 degrees (top/bottom heat) for approximately 30-35 minutes - the cake will rise slightly, but then will slightly sink.