Frozen Grasshopper Squares

Ingredients:	29 Oreo Cookies, divided 1 container mint chocolate chip ice cream, softened 1 tub (8oz) Cool Whip, thawed 1 square semi-sweet chocolate, grated
Directions:	Line 13x9-inch pan with foil. withe ends of foil extending over sides. Crush cookies;sprinkle crumbs onto bottom of prepared pan. Spread ice cream evenly over crumbs in pan;top with Cool Whip and grated chocolate. Freeze 3 hours. Remove from freezer 15 min. before serving. Let stand at room temperature to soften slightly. Lift dessert from pan with foil handles;cut into 16 squares. Cut remaining cookies in half;place 1 on each square.