In a large bowl, add cold butter cut into small pieces and flour and work quickly to obtain a sandy mixture.
Also incorporate sugar and egg and, once you have a uniform dough, add the lavender.
Cover with plastic wrap and leave to rest in the fridge for 1 hour.
Take the dough again, divide it in half and form two cylinders.
Wrap them with plastic wrap and leave them in the freezer for 30 minutes.
Take back the cylinders and cut them into slices of about 1 cm.
As they are ready, place them on the baking sheet covered with parchment paper.
Then cook for about 10-12 minutes at 180 ° C, ventilated oven already warm.
Let the lavender biscuits cool before serving.
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