Creating these Salted Dark Chocolate Pistachio Cookies is easy when you follow these simple steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

2. Cream Butter and Sugars: In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.

3. Add Egg and Vanilla: Beat in the egg and vanilla extract until well combined.

4. Mix Dry Ingredients: In a separate bowl, whisk together the flour, cocoa powder, baking soda, and salt.

5. Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

6. Incorporate Chocolate and Pistachios: Fold in the dark chocolate chips and chopped pistachios until evenly distributed throughout the dough.

7. Scoop Dough: Using a cookie scoop or tablespoon, drop rounded balls of dough onto the prepared baking sheet, spacing them about 2 inches apart.

8. Sprinkle with Sea Salt: Just before baking, lightly sprinkle each cookie with sea salt for an extra flavor boost.

9. Bake: Place the baking sheet in the preheated oven and bake for 12-15 minutes, or until the edges are set but the centers remain soft.

10. Cool: Remove from the oven and allow the cookies to cool on the baking sheet for 10 minutes before transferring to a wire rack to cool completely.

Follow these steps, and you will create a batch of Salted Dark Chocolate Pistachio Cookies that are simply irresistible!