Melt-in-Your-Mouth Shortbread

Preheat the oven to 375 degrees F (190 degrees C).

Beat butter in a large bowl with an electric mixer until light and fluffy. Add flour, confectioners’ sugar, and cornstarch; beat on low for 1 minute, then high for 3 to 4 minutes. Drop spoonfuls of dough 2 inches apart onto ungreased cookie sheets.

Bake in the preheated oven until edges are golden, 12 to 15 minutes. Cool on the baking sheets briefly before removing to a wire rack to cool completely