Ingredients

The following ingredients have 4 Servings
  • 1/2 cup unsalted butter (softened, plus more for pan)
  • 1/2 cup granulated sugar
  • 1/4 cup good quality cocoa powder (preferably dutch-processed)
  • 1/4 tsp salt
  • 1 large egg yolk
  • 1 tsp vanilla extract
  • 1 cup unbleached all-purpose flour
  • 4 oz semi-sweet chocolate (chopped)
  • 2 tbsp butter (cut into pieces)
  • 1/2 cup coarsely chopped pistachios

Instruction