GG’s Shortbread Cookies

Ingredients

• 2 cups butter, softened
• 1 1/2 cups white sugar
• 1/2 cup confectioners’ sugar
• 1 cup cornstarch
• 3 cups all-purpose flour, divided
• 1 egg
• 1/4 cup white sugar, or as needed

Directions

Preheat oven to 350 degrees F (175 degrees C).

Beat butter, 1 1/2 cup white sugar, and confectioners' sugar together in a bowl using an electric mixer until smooth and creamy; mix in cornstarch and 2 cups flour. Make a well in the center of the dough; add egg and mix well. Knead the remaining 1 cup flour into dough using your hands until dough pulls away from the sides of the bowl.

Roll dough into walnut-sized balls. Pour 1/4 cup white sugar into a bowl; dip top of each ball in sugar. Arrange balls on a baking sheet. Slightly flatten each ball using the bottom of a drinking glass.

Bake in the preheated oven until edges of cookies are lightly browned, about 5 minutes. Cool in the pans for 5 minutes before removing to cool completely on a wire rack.