Chop Pistachios: Add half of the pistachios (1/3 cup) to a food processor and pulse into fine crumbs. Set aside. Pulse remaining 1/3 cup just a few times, to chop them. Set aside.
2/3 cup shelled pistachios
Melt butter just until barely melted. Set aside to cool to room temperature.
12 Tablespoons unsalted butter (1 1/2 sticks)
Dry Ingredients: Combine flour, baking soda and salt in a small bowl and set aside.
Wet Ingredient: Mix melted butter and both sugars until well combined. Add egg, egg yolk, and vanilla and stir until combined. Stir in pistachio crumbs.
1 cup light brown sugar, 1/2 cup granulated sugar, 1 large egg, 1 large egg yolk, 2 teaspoons vanilla extract
Combine: Add dry ingredients and stir to combine. Stir in most of the pistachios pieces and chocolate--I like to reserve some for topping on the baked cookies hot out of the oven.
1 1/2 cups chopped semi-sweet chocolate
Chill: The dough will be soft. Refrigerate it for at least 30 minutes or up to 2 days (or freeze for longer).
Bake: Heat oven to 350 degrees F. Line a baking sheet with parchment paper or a silpat baking mat. Divide dough into 18 balls (about 60 grams each) and place on a cookie sheet 2 inches apart. Bake for 10-14 minutes or until set on top.
Garnish: Immediately out of the oven add a few chocolate pieces in each, sprinkle with pistachio, and a tiny pinch of flake salt.
Flake salt
Cool for 10-15 minutes on the baking sheet before moving to a wire cooling rack.
Video
Notes
Yield: 18 cookies. Serving Size: 1 cookie. Make Ahead Instructions: The cookie dough can be made 1-3 days ahead, stored in the refrigerator. Baked cookies are best enjoyed the same day, or frozen if enjoying another day.Freezing Instructions: Scoop cookie dough on a baking sheet then freeze for 30 minutes. Transfer cookie dough to freezer safe container or bag. Bake cookie dough from frozen, adding a few extra minutes to bake time. Baked cookies can be frozen after cooling completely, in an air-tight freezer safe container or bag for up to 3 months.Gluten-Free Cookies: Substitute gluten-free flour