1Heat oven to 375°F. In medium bowl, stir cookie mix, butter and water until soft dough forms.
2Drop dough by teaspoonfuls 1 inch apart on ungreased cookie sheet, making 18 cookies.
3Bake 8 to 10 minutes or until light golden brown. Cool 1 minute before removing from cookie sheet. Cool 4 minutes before assembling.
4Mix frosting and mint extract. Spread about 1 tablespoon frosting on bottom of 1 cookie. Top with additional cookie, bottom sides together.