Preheat oven to 375°F and line two baking sheets with parchment paper.
In a small bowl, mix together all purpose flour, baking powder, baking soda and salt; set aside.
In a large bowl, mix together butter and sugar until combined, then add egg. Add the vanilla extract, lemon juice and lemon zest, then mix in the dry until combined.
Scoop cookies and roll the tops in Bob’s Red Mill Sparkling Sugar. Place 2-inches apart on prepared baking sheets and bake until edges are just golden, about 12 minutes. Let cool on baking sheets for 5 minutes then remove to a cooling rack.