01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking powder, and salt. Set aside.
03 - In a large bowl, beat butter and sugar until light and fluffy, approximately 2–3 minutes.
04 - Beat in eggs one at a time, mixing thoroughly after each addition. Incorporate Limoncello, lemon zest, and vanilla extract until combined.
05 - Gradually mix dry ingredients into wet mixture until soft dough forms.
06 - Drop tablespoon-sized scoops of dough onto prepared baking sheets, spacing 2 inches apart.
07 - Bake for 10–12 minutes until edges are lightly golden. Cool on baking sheet for 2 minutes, then transfer to wire rack.
08 - Whisk powdered sugar, Limoncello, and lemon juice until smooth and pourable consistency is achieved.
09 - Drizzle or spread glaze over completely cooled cookies. Garnish with extra lemon zest if desired. Allow glaze to set before serving.