1-First Step: Mise en Place Measure all ingredients accurately. Spoon flour into the cup and level with a knife to prevent dense cookies. Chop pistachios coarsely for texture and dark chocolate into chunks if needed. Soften butter at room temperature for 30-60 minutes. Line two baking sheets with parchment paper. This setup takes 10 minutes and sets you up for success.

2-Second Step: Dry Ingredients In a medium bowl, whisk together 2 1/4 cups all-purpose flour, 1 tsp baking soda, and 1/2 tsp salt. Set aside. This ensures even distribution and helps cookies rise without lumps. Takes 2 minutes.

3-Third Step: Cream Butter and Sugars Using a stand mixer or hand mixer, beat 1 cup softened unsalted butter, 3/4 cup brown sugar, and 3/4 cup granulated sugar on medium speed until light and fluffy, about 2-3 minutes. Scrape down sides as needed. This step incorporates air for tender cookies.

4-Fourth Step: Add Wet Ingredients Beat in 2 large eggs one at a time, mixing well after each. Add 2 tsp vanilla extract and beat until combined. The mixture should look smooth and glossy. About 1 minute total.

5-Fifth Step: Combine Dry and Wet Gradually add dry ingredients to wet on low speed. Mix just until no flour streaks remain, about 1 minute. Overmixing leads to tough cookies, so stop early.

6-Sixth Step: Fold in Mix-Ins Gently fold in 1 1/2 cups chopped pistachios and 2 cups dark chocolate chunks with a spatula. Distribute evenly for every cookie to have nuts and chocolate. Optional: Chill dough 30 minutes for thicker results.

7-Seventh Step: Scoop and Bake Preheat oven to 375°F. Scoop 2-tablespoon dough balls, placing 2 inches apart on sheets. Bake 10-12 minutes until edges are golden but centers soft. Rotate sheets halfway for even browning.

8-Final Step: Cool and Serve Cool on sheets 5 minutes, then transfer to wire racks. Enjoy warm for melty centers. Yields 36 cookies. Total active time: 45 minutes.