• Preheat to 350°F. then line an 8x8-inch metal pan with parchment and set aside.
• In a heatproof bowl, combine butter, chopped chocolate, and oil. Melt gently (microwave in 30 sec bursts or over a double boiler), then stir in cocoa powder and the espresso powder until smooth. Let it cool slightly.
  ½ cup unsalted butter, 3 tbsp neutral oil, 4 oz 70% dark chocolate, chopped, 2/3 cup Dutch process cocoa powder, 1 tsp instant espresso powder
• In a large bowl, beat eggs, yolk, granulated sugar, powdered sugar, and vanilla on high speed for 3-6 minutes until thick, pale, and ribbon-y. This is where that shiny crackle top is born!
  2 large eggs, 1 egg yolk, 1 cup granulated sugar, ½ cup powdered sugar, 1½ tsp vanilla extract
• With the mixer on low, slowly pour in the slightly cooled chocolate-butter mixture.
• Sift the dry ingredients into the brownie batter mixture. Gently fold into the batter with a spatula.
  ½ cup all-purpose flour, 1 tbsp cornstarch, ½ tsp kosher salt
• Pour the batter into the prepared pan, smooth the top, and tap the pan once on the counter. Bake 25 minutes, or until a toothpick comes out with moist crumbs
• Let cool in pan for a little bit before adding the toppings.

Kataifi Filling and Chocolate Topping

• While the brownies cool, toast the kataifi pastry in melted butter in a large skillet over medium heat until golden brown and crisp.
  200 g kadaifi/kataifi (shredded phyllo dough), 3 tbsp butter
• Stir in pistachio cream and tahini until the filling ingredients are well coated and spreadable.
  2/3 cup pistachio cream, 3 tbsp tahini
• Once the brownies are slightly cooled, gently spread the pistachio kataifi filling over the top of the brownie layer, pressing it evenly by laying a piece of parchment paper on top and gently pressing with your hand.
• Melt the semi-sweet chocolate with coconut oil (microwave or double boiler), then spread this glossy mixture over the kataifi layer.
  1 & 1/2 cup semi sweet chocolate chips, 2 tbsp coconut oil
• Drizzle with melted pistachio butter to create beautiful visual swirls. Allow everything set completely before slicing into individual pieces.