Preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper.
Cream butter and sugar together until light and fluffy.
Add eggs, lemon zest, and lemon juice, mixing until fully combined.
Whisk together flour and baking powder, then gradually fold into the wet mixture.
Scoop cookie dough onto the baking sheet, leaving some space between each cookie.
Bake for 10–12 minutes or until edges are lightly golden.
Cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.
Optional: Dust with powdered sugar or drizzle with lemon glaze once cooled.