Heat oven to 350 degrees F. Grease 15 x 10-inch baking pan.
In large bowl, combine cake mix, 1/3 cup butter and egg. Beat at low speed until
crumbly. Press evenly in bottom of greased pan. Bake for 10 minutes. Cool completely.
In a large bowl, dissolve gelatine in boiling water; cool slightly. Add 2 cups
of the confectioners' sugar; blend well. Add 1/2 cup butter, shortening, peppermint
extract and food color. Beat 1 minute at medium speed or until smooth and creamy.
Blend in remaining 2 cups powdered sugar until smooth. Spread filling evenly over
In small saucepan over low heat, melt frosting Ingredients chocolate chips and
3 teaspoons butter. Stir constantly until well blended.
Spoon frosting evenly over filling, carefully spreading to cover.
Refrigerate until firm.
Cut into bars. Let stand at room temperature about 20 minutes before serving.