Preheat your oven to 350°F (175°C).

In a medium-sized bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside.

In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy.

Beat in the egg, fresh lime juice, and lime zest into the butter-sugar mixture until well combined.

Gradually add the dry ingredients to the wet mixture, mixing until just combined.

Chill the dough in the refrigerator for at least 30 minutes.

Scoop tablespoon-sized portions of dough, roll them into balls, and place them on a baking tray lined with parchment paper, spaced about 2 inches apart.

Bake the cookies for 10-12 minutes or until the edges are lightly golden.

If adding a glaze, combine powdered sugar and lime juice in a bowl, then drizzle over cooled cookies.