01 - Preheat the oven to 350°F and line two baking sheets with parchment paper.
02 - In a large bowl, cream together the softened butter and sugar using an electric mixer until pale and fluffy, about 2-3 minutes.
03 - Beat in the egg, lemon juice, lemon zest, and vanilla extract until evenly combined.
04 - In a separate bowl, whisk together the flour, baking soda, and salt until evenly distributed.
05 - Gradually add the dry ingredients into the wet mixture, mixing just until incorporated. Avoid overmixing to keep the cookies tender.
06 - Scoop heaping tablespoons of dough and roll each portion into a ball. If desired, roll each ball in powdered sugar for a sweet coated finish.
07 - Place the dough balls 2 inches apart on the prepared baking sheets to allow for spreading.
08 - Bake for 9-11 minutes, or until the edges are just set and the centers still look slightly underbaked for a soft, chewy texture.
09 - Let the cookies cool on the baking sheet for 5 minutes, then transfer to a wire cooling rack to cool completely.