Measure your flour into a bowl and whisk to aerate the flour and remove any lumps.
In a large mixing bowl or the bowl of a stand mixer combine the salted butter, brown sugar, vanilla extract, and kosher salt. Only add the kosher salt if you want your cookies a little extra salty. Mix on low until ingredients are roughly combined then increase mixer speed to medium and beat until mixture is lighter in color and fluffy, about 3 minutes.
Add all of the flour at once and mix on low speed until the flour is well combined and the dough comes together into large clumps, about 5 minutes. At first, the cookie dough will have a crumbly texture and then it will come together.
Add the chopped pecans and mix on low speed until the pecans are distributed throughout the dough.
Turn the cookie dough out onto a lightly floured surface. Use your hands to shape the dough into a large ball and then divide it in half. Each half should weigh about 300 grams. Shape each half into a log about 6-1/2 inches long and 1-1/2 inches thick. Wrap each log in wax wrap and refrigerate for at least 2 hours.
The cookie dough can be refrigerated for up to 2 days. You can also freeze the cookie dough logs for up to 3 months. After the dough has refrigerated for 2 hours, please the logs in a freezer storage bag and place them in the freezer.