Combine the powdered sugar, unsalted butter, egg yolk and sea salt in a food processor and pulse until smooth.
70 g Powdered Sugar, 127 g Unsalted Butter, 1 Egg Yolk , ¼ teaspoon Sea Salt
Mix the flour and freeze dried strawberry powder in a small bowl - then add into the food processor and pulse until the dough just comes together.
3 Tablespoons Freeze Dried Strawberry Powder, 163 g All-Purpose Flour
Separate the dough into two portions and shape it into a disk. Wrap each disk in plastic and set it in the freezer for about twenty minutes.
Remove disks from the freezer once they've slightly firmed. Taking two pieces or parchment paper, place one piece of parchment below the dough and one on top. Roll out your dough to ¼ inch and cut into circles using a cookie cutter. Place the strawberry sugar in a shallow bowl and coat each side in strawberry sugar.
¼ cup Strawberry Sugar
Freeze shortbread for at least 20 minutes while preheating the oven to 330 degrees Fahrenheit.
Bake the cookies for 8 minutes, making sure that you take them out of the oven before you see too much browning occur.
Allow your cookies to cool on a cooling rack once baked and enjoy!