01 -
Line a plate with parchment paper. Spread pistachio cream into a thick sheet or scoop dollops. Freeze for at least 1 hour until solid. If using the sheet method, cut into squares and keep frozen until needed.
02 -
Line a cutting board or plate with parchment paper for chilling the cookie dough. Set aside.
03 -
In a small bowl, mix together all-purpose flour, cornstarch, baking powder, baking soda, and salt. Set aside.
04 -
In a large bowl, whisk melted butter, brown sugar, and granulated sugar until combined. Add egg and vanilla extract, whisking until smooth and thick.
05 -
Gradually add the flour mixture to the butter mixture and whisk until partially combined. Fold in chopped chocolate and pistachios using a spatula.
06 -
Use a 4-tablespoon cookie scooper to portion cookie dough. Place dough balls onto the prepared parchment-lined surface and refrigerate for about 1 hour until firm.
07 -
Preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper.
08 -
Flatten each dough ball and place a frozen pistachio cream square or dollop in the center. Wrap the dough around the filling and seal completely.
09 -
Place cookies on the baking sheet with 2-inch spacing. Garnish with extra chocolate, pistachios, and optional frozen pistachio cream pieces.
10 -
Bake for 11-12 minutes until edges are set but centers remain soft. Sprinkle with flaky salt immediately after baking. Cool for 5 minutes before serving warm or at room temperature.