1Lightly spray 24 mini muffin cups with cooking spray. Prepare cookie dough as directed on package except--use 3 tablespoons oil, 1 tablespoon water, 1 egg and the peppermint extract. Shape dough into 24(1-inch) balls; place in muffin cups.
2Bake at 375° F for 8 to 10 minutes or until set. Immediately make indentation in center of each cookie with end of wooden spoon to form a cup. Cool 30 minutes. Remove from pan; cool completely.
3In medium bowl, beat powdered sugar, crushed peppermint candies, butter, milk, and red food color with electric mixer on medium speed until smooth and creamy. Spoon frosting into decorating bag with large star tip (#5). Pipe into each cookie cup. Sprinkle with powdered sugar. Store in refrigerator.