01 - Preheat the oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together the flour, baking powder, and salt until well blended.
03 - In a small bowl, combine the lavender and lemon zest. Using your fingers, gently rub them together to release the essential oils and fragrance. Set aside.
04 - In a large bowl, beat the butter and sugar together until light and fluffy, approximately 2-3 minutes.
05 - Beat in the egg, then add the vanilla extract and lemon juice, mixing until fully incorporated.
06 - Stir in the prepared lavender-lemon zest mixture until evenly distributed throughout the batter.
07 - Gradually add the dry ingredients to the wet mixture, mixing just until combined. Take care not to overmix to maintain tender texture.
08 - Scoop tablespoon-sized portions of dough onto the prepared baking sheets, spacing them approximately 2 inches apart to allow for spreading.
09 - Bake for 10-12 minutes, or until the edges are just beginning to turn golden brown while centers remain slightly soft.
10 - Let the cookies cool on the baking sheets for 5 minutes, then transfer to a wire rack to cool completely. Once cooled, dust lightly with powdered sugar if desired.