Preheat your oven to 375°F (190°C) and line two baking sheets with parchment paper.

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

Cream together the granulated sugar and softened butter until light and fluffy, about 3 minutes.

Beat in the egg until fully incorporated into the butter-sugar mixture.

Gradually add the dry mixture and orange juice to the wet mixture, stirring gently until just combined.

Shape the dough into balls and place them on the lined baking sheets, spaced 2 inches apart.

Bake for 10-12 minutes until the edges are golden and centers are set.

Remove from the oven and cool on baking sheets for about 5 minutes before transferring to a wire rack.

In a bowl, mix confectioners’ sugar, orange zest, orange juice, and melted butter until smooth for the glaze.

Drizzle the glaze over cooled cookies and allow it to set before serving.