Start by making the pistachio filling. Mix the pistachio butter and kataifi until well combined.
3/4 cup pistachio butter, 1 heaping cup roasted kataifi
Portion out 1 Tbsp dollops of the filling onto a lined baking sheet and place in the freezer until needed.
Preheat the oven to 350°F (180°C).
Using a stand mixer, cream together the butter and sugars until light in color and fluffy in texture, about 2 minutes to make the dough.
1 1/2 cups (333g) salted butter, softened, 1 1/2 cups (369g) brown sugar, 1/2 cup (115g) granulated sugar
Scrape down the sides and add in the eggs, corn syrup and vanilla. Mix until thoroughly combined.
3 eggs, 2 Tbsp corn syrup, 1 Tbsp vanilla
Next, add the flour, cocoa powders, corn starch, baking soda and salt. Mix until your chocolate cookie dough forms. The dough will be soft.
3 3/4 cups (570g) all-purpose flour, 1/2 cup (60g) dutch processed cocoa powder, 1/2 cup (60g) black cocoa powder, 1 Tbsp corn starch, 2 tsp baking soda, 1 tsp salt
Portion out the dough using a #12 scoop (1/3 cup) and break each scoop into two halves. Flatten each half slightly.
Working in batches of 6, place a frozen dollop of filling in the center of one of your discs and top with another disc.
Pinch the edges of the dough together around the filling, and then use your fingers to smooth out the edges.
Bake on a lined baking sheet for 13-15 minutes until the tops no longer look wet and glossy.
Allow to cool completely on the baking sheet.
Repeat steps 8-11 with the remaining dough, being sure to leave the filling in the freezer until needed.
While the cookies cool, make your ganache by measuring out the heavy cream into a microwave-safe bowl and heat for 1 1/2 minutes or until it is boiling.
1/2 cup (120ml) heavy whipping cream
Remove the bowl from the microwave and add in the chocolate chips. Use a spoon and push the chocolate chips around so they are all covered by the heavy cream. Allow the chocolate chips to sit in the hot cream for 3-5 minutes.
1 1/2 cups (300g) chocolate chips
After the time is up, use a whisk and stir the chocolate chips into the heavy cream until smooth. Spread onto each cookie.
Top with a drizzle of leftover pistachio butter and a few chopped pistachios.
Remaining pistachio butter for drizzling, 1/2 cup chopped pistachios, for garnish