MELT chocolate as directed on package; set aside until ready to use. Line 8-1/2 x 4-1/2-inch loaf pan with foil, with ends of foil extending over sides of pan. Arrange 8 of the cookies evenly on bottom of pan. Crumble remaining 6 cookies; set aside.

BEAT cream cheese, sugar and vanilla in medium bowl with electric mixer on medium speed until well blended. Stir in whipped topping. Remove about 1-1/2 cups of cream cheese mixture; place in medium bowl. Stir in melted chocolate.

SPREAD remaining cream cheese mixture over cookies in pan; sprinkle with crumbled cookies. Gently press cookies into cream cheese mixture with back of spoon; top with chocolate mixture. Cover. Freeze 3 hours or until firm. Remove from freezer; invert onto serving plate. Peel off foil; let stand at room temperature to soften slightly before cutting to serve.