In a bowl, mix the sugar and the lavender. Add the butter and whisk until it becomes a little fluffy.
Add the flour gradually, stir until well mixed. The dough holds together.
Refrigirate for 1 hour.
Roll the dough and make some shapes of your choice. I choose to make thin cookies (of about 2millimeters) but you can make them thicker. Re-knead and re-roll the dough until finished.
Bake in a warm oven at 400F for 7-8 minutes or until the cookie is slightly golden.
Allow to cool down if you can wait...