01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - Whisk together gluten-free flour blend, baking soda, and salt in a medium bowl. Set aside.
03 - Beat softened butter, brown sugar, and granulated sugar in a large bowl until light and fluffy, approximately 2 minutes.
04 - Mix in egg, vanilla extract, orange zest, and orange juice until well combined.
05 - Gradually stir in dry ingredients until just incorporated.
06 - Fold in dark chocolate chips until evenly distributed throughout dough.
07 - Drop rounded tablespoons of dough onto prepared baking sheets, spacing cookies approximately 2 inches apart.
08 - Bake for 11 to 13 minutes until edges are set and centers appear slightly underbaked.
09 - Let cookies rest on baking sheet for 5 minutes before transferring to wire rack to cool completely.