Preheat Oven: Preheat your oven to 350
Mix Dry Ingredients: In a medium bowl, whisk together the flour, baking soda, sea salt, ground cinnamon, and ground ginger. Set aside.
Cream Butter and Sugar: In the bowl of an electric mixer, beat the room-temperature butter, brown sugar, and granulated sugar until light and fluffy.
Add Wet Ingredients: Scrape down the sides of the bowl, then mix in the egg, molasses, vanilla extract, and lavender extract until well combined.
Combine Wet and Dry: Gradually add the dry ingredients to the wet mixture, mixing until just combined.
Portion the Dough: Measure 80-gram portions of dough and roll them into dough balls. Place them at least 2 ½ inches apart on a parchment-lined baking sheet to allow for spreading.
Bake: Bake the cookies for 12-14 minutes, just until set. Avoid overbaking; they will continue to cook slightly as they cool.
Shape the Cookies: As soon as the cookies come out of the oven, use the back of a spoon to gently nudge the edges toward the center, creating a slight lip to hold the icing and maintaining a circular shape.
Cool Completely: Let the cookies cool completely before adding the lavender frosting.