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 using an electric mixer, beat the softened unsalted butter, granulated sugar, and light brown sugar together until light and fluffy, about 2 to 3 minutes.
04 - Add the eggs one at a time, beating well after each addition. Mix in the fresh lemon juice, lemon zest, and vanilla extract until fully combined.
05 - Gradually add the dry ingredient mixture to the wet ingredients, mixing on low speed just until the dough comes together. Do not overmix.
06 - Scoop tablespoon-sized portions of dough and roll each into a ball. Roll each ball in the extra granulated sugar to coat evenly and place on the prepared baking sheets about 2 inches apart.
07 - Bake for 9 to 11 minutes, until the edges are set and lightly golden but the centers remain soft.
08 - Let the cookies rest on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.