Preheat the oven to 350°F.

In a small mixing bowl, whisk together the flour, baking soda, and baking powder; set aside.

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

Mix in the egg and vanilla, then stir in the orange zest.

Gradually add the dry ingredients to the wet ingredients and mix until a soft dough forms.

Roll the dough into 1.5-tablespoon balls and place them on a parchment-lined or silicone-lined baking sheet.

Chill the rolled dough balls in the refrigerator for 1 hour.

Bake at 350°F for 12–15 minutes, or until the edges are lightly golden.

Let the cookies cool completely on a cooling rack.

To make the glaze, whisk together powdered sugar, orange juice, and orange zest until smooth and pourable.

Spoon or drizzle the glaze over the cooled cookies.

Zest fresh orange over the tops for decoration if desired.

Allow the glaze to set for at least 30 minutes before serving. Enjoy!