Preheat oven to 350°F (175°C). Line baking sheets with parchment paper.
In a large bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
Beat in the eggs one at a time, then stir in the vanilla extract.
In a separate bowl, whisk together the flour, baking soda, and salt.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Do not overmix.
Stir in the toasted chopped pecans.
Drop rounded tablespoons of dough onto the prepared baking sheets.
Bake for 9-11 minutes, or until the edges are lightly golden brown and the centers are still slightly soft.
Let the cookies cool on the baking sheets for a few minutes before transferring them to a wire rack to cool completely.
Notes
For an extra boost of flavor, you can brown the butter before using it in the recipe. Let the cookies cool completely before storing them in an airtight container.