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 fully combined and smooth.
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 on low speed just until incorporated. Do not overmix to keep the cookies tender.
06 - Scoop heaping tablespoons of dough and roll into balls. If desired, roll each ball in powdered sugar for a frosted finish.
07 - Place 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 chewy texture.
09 - Let the cookies cool on the baking sheets for 5 minutes, then transfer to a wire cooling rack to cool completely.