01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together the all-purpose flour, baking soda, and salt. Set aside.
03 - In a large bowl, beat the softened butter, granulated sugar, and brown sugar with an electric mixer until light and fluffy, about 2 to 3 minutes.
04 - Add the egg, egg yolk, vanilla extract, lemon zest, and lemon juice to the butter mixture. Beat until fully combined.
05 - Gradually add the dry ingredients to the wet mixture on low speed, mixing until just combined. Do not overmix.
06 - Gently fold in the raspberries and white chocolate chips with a spatula, being careful not to crush the berries.
07 - Scoop about 2 tablespoons of dough per cookie onto the prepared baking sheets, spacing them approximately 2 inches apart.
08 - Bake for 11 to 13 minutes, until the edges are set but the centers still appear slightly underbaked for optimal chewiness.
09 - Allow the cookies to cool on the baking sheets for 10 minutes, then transfer to a wire rack to cool completely.