Preheat oven to 350℉ (180℃)
Prepare 2 baking sheets by lining with parchment paper or silicone baking mats.
In a medium bowl, whisk together flour, baking soda, salt. Set aside aside for later.
2 ½ Cups All Purpose Flour, ½ teaspoon baking soda, 1 teaspoon Salt
Using a stand-mixer with the paddle attachment, begin mixing butter, brown sugar and granulated sugar until light and fluffy (approximately 2 - 4 minutes on medium speed). Scrape bowl as needed. Note: a hand-mixer may also be used.
1 Cup Brown Sugar, 1 Cup Butter, room temperature, ½ Cup Granulated Sugar
Add eggs and mix on low speed until incorporated, scraping bowl as needed.
2 Large Eggs, room temperature
Add flour mixture and mix on low speed until combined. Take care not to overmix as this can create a tough cookie.
Remove bowl from the mixer and add pecans to the bowl. Fold in by hand making sure the nuts are distributed evenly.
Scoop dough onto the prepared baking sheets using a small cookie scooper (approximately 1 ½ tablespoon per cookie). Leave approximately 2 inches of space between each cookie.
Bake cookies for 12 - 15 minutes or until tops and edges are a pale golden color.
Let cookies cool on the baking sheets for 5 to 10 minutes, then transfer to a wire rack to cool completely.