01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - Whisk together flour, baking powder, and salt in a medium bowl.
03 - Combine lemon zest and dried lavender in a small bowl. Gently rub together with fingers to release essential oils.
04 - Beat softened butter and granulated sugar in a large bowl until light and fluffy, approximately 2-3 minutes.
05 - Add egg, vanilla extract, and lemon juice to butter mixture. Beat until fully incorporated.
06 - Stir in lemon zest and lavender blend until evenly distributed.
07 - Gradually add dry ingredients to wet mixture, mixing just until combined. Avoid overmixing to prevent tough cookies.
08 - Scoop tablespoon-sized dough balls onto prepared baking sheets, spacing 2 inches apart to allow for spreading.
09 - Bake for 10-12 minutes until edges are lightly golden. Centers should appear slightly underbaked.
10 - Let cookies rest on baking sheet for 5 minutes, then transfer to wire rack to cool completely.