01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking soda, and salt. Set aside.
03 - In a large bowl, beat softened butter, granulated sugar, and light brown sugar until light and fluffy, about 2 minutes.
04 - Add the egg and vanilla extract to the butter mixture, beating until fully combined.
05 - Gradually add the dry mixture to the wet ingredients, mixing just until incorporated.
06 - Gently fold in dried cranberries, dried blueberries, white chocolate chips if using, and orange zest.
07 - Scoop tablespoon-sized portions of dough onto the prepared baking sheets, spacing approximately 2 inches apart.
08 - Bake for 10 to 12 minutes, until edges are lightly golden and centers are set.
09 - Let cookies cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.