Ingredients
2cupsbutter,softened
1½cupswhite sugar
½cupconfectioners’ sugar
1cupcornstarch
3cupsall-purpose flour,divided
1egg
¼cupwhite sugar,or as needed
Preparation
Preheat oven to 350 degrees F.
Beat butter, white sugar, and confectioners’ sugar together in a bowl using an electric mixer until smooth and creamy; mix in cornstarch and 2 cups of flour.
Make a well in the center of the dough; add egg and mix well. Knead the remaining 1 cup flour into the dough using your hands until dough pulls away from the sides of the bowl.
Roll dough into walnut-sized balls. Pour the additional 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.
