Preheat oven to 350 degrees F (175 degrees C). Line a baking sheet with parchment paper.
In a medium bowl, whisk together flour, baking soda, and salt.
In a large bowl, cream together butter, granulated sugar, and brown sugar until light and fluffy. Beat in eggs one at a time, then stir in vanilla extract.
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Gradually add dry ingredients to wet ingredients, mixing until just combined. Stir in pecans.
Drop rounded tablespoons of dough onto prepared baking sheet.
Bake for 10-12 minutes, or until golden brown.
Let cookies cool on baking sheet for a few minutes before transferring to a wire rack to cool completely.