Ingredients:

  • 57g unsalted butter, cool room temperature
  • 66g granulated white sugar
  • 18g large egg yolk
  • 5ml pure vanilla extract
  • 125g all-purpose flour
  • 4g cornstarch
  • 1g baking powder
  • 1g fine sea salt
  • 60g powdered sugar
  • 10ml milk or heavy cream
  • 5ml vanilla extract

Instructions:

  1. Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper or a silicone mat.
  2. In a small mixing bowl, vigorously cream the cool room-temperature butter and granulated sugar together using a whisk or spatula until the mixture is pale and aerated, approximately 2 minutes.
  3. Whisk in the egg yolk and vanilla extract until fully emulsified and smooth.
  4. Sift in the all-purpose flour, cornstarch, baking powder, and fine sea salt. Fold the dry ingredients into the butter mixture until a cohesive dough forms.
  5. Divide the dough into 6 equal portions (approximately 32g each) and roll into smooth balls. Place them on the prepared baking sheet, spacing them 2 inches apart.
  6. Bake for 10 minutes or until the edges are just barely golden and the centers look set but soft. Do not overbake.
  7. Allow cookies to cool on the pan for 5 minutes before transferring to a wire rack. Whisk together powdered sugar, milk, and vanilla extract to create the glaze and drizzle over cooled cookies.