Preheat oven to 375°F (190°C). Line baking sheets with parchment paper.
In a medium bowl, whisk together the flour, baking soda, and salt.
In a large bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
Beat in the egg, vanilla extract, orange zest, and orange juice until well combined.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Gently fold in the chopped cranberries and nuts (if using).
Drop by rounded tablespoons onto the prepared baking sheets.
Bake for 9-11 minutes, or until the edges are golden brown.
Let the cookies cool on the baking sheets for a few minutes before transferring them to a wire rack to cool completely.
