Preheat oven to 350°F (175°C). Line baking sheets with parchment paper.
In a large bowl, cream together the butter, brown sugar, and granulated sugar until smooth.
Beat in eggs one at a time, then stir in vanilla.
In a separate bowl, whisk together the flour, baking soda, and salt.
Gradually add the dry ingredients to the wet mixture, mixing just until combined.
Fold in the chocolate chips and toasted pecans.
Drop heaping tablespoons of dough onto prepared baking sheets, spacing them about 2 inches apart.
Bake for 9–11 minutes, or until the edges are golden brown and centers are just set.
Let them cool on the pan for 2 minutes before transferring to a wire rack.