01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - Whisk together flour, baking soda, and salt in a medium bowl. Set aside.
03 - Beat softened butter, granulated sugar, and brown sugar in a large mixing bowl until creamy and light, approximately 2-3 minutes.
04 - Mix in egg, vanilla extract, lemon zest, and lemon juice until fully combined.
05 - Gradually add dry ingredients to wet mixture, mixing until just combined.
06 - Gently fold blueberries and white chocolate chips into dough, being careful not to crush the berries.
07 - Drop tablespoon-sized dough portions onto prepared baking sheets, leaving about 2 inches of space between each.
08 - Bake for 11-13 minutes until edges are golden and centers appear slightly underbaked.
09 - Let cookies rest on baking sheet for 5 minutes, then transfer to wire rack to finish cooling.