Chocolat-Mint Cookies

1/2 cup butter or margarine, softened

1 teaspoon vanilla

1 egg

2 oz unsweetened baking chocolate, melted, cooled

1 cup Gold Medal® all-purpose flour

1/2 teaspoon salt

2 1/2 cups powdered sugar

1/4 cup butter or margarine, softened

3 tablespoons milk

1/2 teaspoon peppermint extract

1/4 cup butter or margarine

2 tablespoons corn syrup

1 cup semisweet chocolate chips (6 oz)

Crushed round hard peppermint candies, if desired