Ingredients:

  • 1 cup (225g) unsalted butter, softened
  • 1 cup (200g) granulated sugar
  • 1 large (50g) egg, room temperature
  • 2 tsp (10ml) fresh lemon zest
  • 2 tbsp (30ml) fresh lemon juice
  • 1 tsp (5ml) vanilla extract
  • 2 ¼ cups (280g) all-purpose flour
  • 2 tsp (6g) cornstarch
  • ½ tsp (3g) baking soda
  • ¼ tsp (1.5g) salt
  • 1 cup (120g) powdered sugar
  • 2 tbsp (30ml) fresh lemon juice
  • 1 drop (0.5ml) lemon extract

Instructions:

  1. Beat the softened butter and granulated sugar on medium-high speed until the mixture looks pale and fluffy (about 2-3 minutes).
  2. Incorporate the egg, lemon zest, lemon juice, and vanilla extract, beating until the emulsion is smooth and glossy.
  3. Whisk the flour, cornstarch, baking soda, and salt together in a separate bowl.
  4. Gradually add the dry mixture to the wet ingredients on low speed, mixing only until the white streaks of flour disappear.
  5. Scoop rounded tablespoons of dough (about 1.5 tbsp each) onto parchment-lined sheets, spacing them 2 inches apart.
  6. Bake at 350°F (175°C) for 8–10 minutes; remove when edges are barely set and tops remain pale.
  7. While cookies cool on a wire rack, whisk together powdered sugar, lemon juice, and lemon extract until a thick, drizzlable consistency forms.
  8. Drizzle the icing over the cooled cookies.