Zest the orange, then squeeze for the juice. You need 2 tablespoons of orange juice plus all the zest for the recipe.
Preheat oven to 350°. In a small bowl combine ¼ cup EACH granulated and coarse sugars.
Line a cookie sheet with parchment paper.
Mix together the flour, baking soda, baking powder and salt. Set aside.
With an electric mixer, cream the butter and sugar for about 5 minutes until light and fluffy. Scrap the sides with spatula.
Add orange zest, orange juice, egg and vanilla extract and mix until combined.
Gradually blend in the dry ingredients, scrapping the sides as needed.
Scoop up the dough to make cookie balls, and roll in sugar.
Place on prepared cookie sheet, leaving about 5" between each cookie.
Bake for 20-25 minutes til slightly firm to the touch and beginning to brown around the edges.
For smaller tablespoon size cookies space 3" apart and bake for 15-17 minutes.