01 - In a large bowl, beat the softened butter and powdered sugar together until the mixture becomes light and fluffy, approximately 2-3 minutes.
02 - Add the lemon zest, chopped lavender, and salt to the butter mixture. Mix thoroughly until all ingredients are evenly distributed throughout the dough.
03 - Gradually pour in the all-purpose flour while mixing. Continue mixing just until the dough forms a cohesive ball and no dry flour streaks remain visible. Avoid overmixing to maintain tender texture.
04 - Divide the dough into two equal portions. Shape each portion into a log approximately 2 inches in diameter. Wrap each log tightly in plastic wrap and refrigerate for a minimum of 30 minutes or until firm enough to slice cleanly.
05 - Set oven temperature to 350°F. Line two baking sheets with parchment paper to prevent sticking and ensure easy cleanup.
06 - Remove the chilled dough logs from refrigerator. Using a sharp knife, slice each log into rounds approximately 1/4-inch thick. Arrange the cookie rounds on the prepared baking sheets, leaving about 1 inch of space between each cookie.
07 - Place the baking sheets in the preheated oven. Bake for 14-16 minutes until the edges develop a light golden color. The centers should remain pale.
08 - Allow the cookies to rest on the baking sheets for 5 minutes after removing from oven. Transfer to a wire cooling rack and let cool completely before applying icing.
09 - In a small bowl, whisk together the sifted powdered sugar, 2 tablespoons lemon juice, and lemon zest until smooth and glossy. Add additional lemon juice 1 teaspoon at a time if the mixture is too thick to drizzle.
10 - Drizzle or spread the lemon icing generously over each cooled cookie. If desired, sprinkle a few dried lavender buds on top of the icing while still wet. Allow the icing to set completely before serving or storing.