01 - Preheat oven to 350°F. Line two baking sheets with parchment paper and set aside.
02 - In a large mixing bowl, beat softened butter and granulated sugar together using an electric mixer until pale, light, and fluffy, about 2 to 3 minutes.
03 - Add the egg, freshly squeezed lemon juice, lemon zest, and vanilla extract to the butter mixture. Beat until fully combined and smooth.
04 - In a separate medium bowl, whisk together the all-purpose flour, baking soda, and salt until evenly distributed.
05 - Gradually add the dry ingredient mixture to the wet ingredients, mixing on low speed just until incorporated. Avoid overmixing to keep cookies tender.
06 - Scoop heaping tablespoons of dough and roll into balls. If desired, roll each ball in powdered sugar for a delicate coated finish.
07 - Place dough balls approximately 2 inches apart on the prepared baking sheets to allow for spreading.
08 - Bake for 9 to 11 minutes, or until the edges are just set and the centers appear slightly underbaked. This ensures a soft, chewy texture.
09 - Allow cookies to rest on the baking sheet for 5 minutes, then transfer to a wire cooling rack to cool completely before serving or storing.