Directions

1. Place a 9-inch round sheet of parchment paper or waxed paper over the base of an 8-inch springform pan. Attach sides of pan to base, clamping the paper in place. Set pan aside.
2. In a large bowl combine cookie crumbs, chocolate pieces, butter, and finely chopped pecans. Press 1/3 of the cookie crumb mixture onto the bottom of the prepared pan. Carefully spread the softened chocolate ice cream with the back of a large spoon over the cookie crumb layer. Cover and freeze for 1 hour.
3. Sprinkle half of the remaining cookie crumb mixture over the chocolate ice cream, pressing gently to form a crust. Carefully spread the vanilla ice cream over the cookie crumb layer using the back of a large spoon. Sprinkle remaining crumb mixture over the vanilla ice cream, pressing gently to form a crust. Cover and freeze for 1 hour.
4. Remove sides of pan; lift cake from bottom of pan and peel paper off bottom of cake. Place frozen cake on a serving platter. Frost with whipped dessert topping. Top with coarsely chopped pecans. Loosely cover and freeze 4 to 24 hours or till firm. Let stand at room temperature 30 minutes before serving. Makes 12 servings.