Preheat oven to 350 F. Line a baking sheet with parchment paper.
Place sugars in a medium mixing bowl and add 1 tablespoon of lemon zest. Rub with your fingers until the zest has become flavorful and mixed into the sugars.
Add the butter to the bowl and beat together until light, about 3 minutes. You can also mix this by hand. Add lemon juice and egg yolk and mix again.
Slowly mix in baking soda, salt, baking powder and flour until combined.
Scoop the dough into 5 large balls, I used a 3 tablespoon scoop, and roll in extra sugar. Place cookie dough balls on your lined baking sheet.
Bake the cookies for 11-13 minutes. You're looking for a nice light golden brown around the edges, and some crackling along the top.
Notes
I like to sprinkle the cookies with extra sugar once I pull them out of the oven.I have given both cups and grams as measurements. Grams will be more precise, especially when measuring flour. If you don't have a kitchen scale, no problem! Just lightly spoon flour into your measuring cup to insure its not packed in there. Light and fluffy is the key.