01 - Preheat oven to 350°F. Line two baking sheets with parchment paper and set aside.
02 - In a medium bowl, whisk together the all-purpose flour, baking soda, and salt until evenly distributed. Set aside.
03 - In a large mixing bowl, beat the softened unsalted butter, granulated sugar, and light brown sugar with an electric mixer on medium speed until pale, light, and fluffy, approximately 2 to 3 minutes.
04 - Add the whole egg, egg yolk, pure vanilla extract, lemon zest, and fresh lemon juice to the creamed mixture. Beat on medium speed until fully combined and smooth.
05 - Gradually add the dry ingredient mixture to the wet ingredients on low speed, mixing until just combined. Avoid overmixing to keep the cookies tender.
06 - Gently fold the fresh raspberries and white chocolate chips into the dough using a spatula, taking care not to crush the berries.
07 - Scoop approximately 2 tablespoons of dough per cookie onto the prepared baking sheets, spacing each portion about 2 inches apart to allow for spreading.
08 - Bake for 11 to 13 minutes, until the edges are lightly set but the centers still appear slightly underbaked. This ensures a chewy texture once cooled.
09 - Allow the cookies to rest on the baking sheets for 10 minutes, then transfer to a wire rack to cool completely before serving or storing.