01 -
In a large bowl, cream together the butter and confectioners' sugar until light and fluffy. Beat in the peppermint extract until well incorporated.
02 -
In a separate bowl, whisk together the flour, cornstarch, and salt. Gradually add this mixture to the creamed butter mixture, mixing until fully combined.
03 -
Cover the cookie dough and refrigerate for at least 30 minutes to help maintain shape during baking.
04 -
Preheat oven to 180°C (350°F). Form the chilled dough into 2.5 cm (1-inch) balls and place them 5 cm (2 inches) apart on ungreased baking sheets.
05 -
Bake for 9-11 minutes until the bottoms are lightly browned. Transfer to wire racks and cool completely.
06 -
In a small bowl, beat the butter until creamy. Gradually add confectioners' sugar, milk, peppermint extract, and food coloring if using, mixing until smooth and spreadable.
07 -
Spread the peppermint frosting over each cooled cookie and immediately sprinkle with crushed peppermint candies. Allow frosting to set before serving.