Preheat your oven to 350°F (175°C). Line baking sheets with parchment paper.
In a large bowl, cream together the softened butter, brown sugar, and granulated sugar until light and fluffy.
Beat in the egg and vanilla extract until well combined.
In a separate bowl, whisk together the flour, baking soda, salt, and cinnamon (if using). Gradually add the dry ingredients to the wet mixture, mixing until just combined.
Fold in the chopped pecans and white chocolate chips (if using).
Drop tablespoon-sized portions of dough onto the prepared baking sheets, spacing them about 2 inches apart.
Bake for 10-12 minutes, or until the edges are lightly golden. Allow the cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.
Notes
For extra flavor, toast the pecans before adding them to the dough. Store cookies in an airtight container for up to 5 days.
Keyword butter pecan cookies, cookie recipe, pecan cookies