Preheat oven to 350°F (175°C).

In a bowl, whisk together flour, baking powder, and salt.

In another bowl, cream softened butter and sugar until light and fluffy.

Beat in the egg, lemon zest, and lemon juice until well combined.

Gradually mix the dry ingredients into the wet mixture until just combined.

Scoop tablespoon-sized portions onto lined baking sheets.

Bake for 10-12 minutes or until edges are lightly golden; centers should remain soft.

Cool on wire racks before enjoying.