Directions

1. In a large bowl and with an electric mixer beat together butter and 1 cup of sugar until light and fluffy. Add lemon zest and juice, egg, and vanilla and beat until incorporated. Scrape sides of bowl.
   
2. In a small bowl whisk together baking soda, salt, and flour. Add mixture to large bowl and beat on low until no streaks remain. Cover batter and chill for at least 4 hours or overnight.
   
3. Preheat oven to 350 degrees. Line a baking sheet with parchment paper. Use a medium scoop to portion dough and shape into smooth balls. Add remaining 1/4 cup sugar into a small bowl and coat each dough ball in the sugar.
   
4. Space dough balls 3-inches apart on the prepared baking sheet. Bake for 12-14 minutes. Allow cookies to rest on baking sheet for 5 minutes before transferring to a wire rack to cool completely.