Ice Cream Dessert

1 package chocolate water cookies -- crushed
1/4 cup margarine -- melted
1 quart vanilla ice cream -- softened
1 small package instant chocolate pudding mix
1 large package instant vanilla pudding mix
2 cups whipping cream -- extra creamy
1/2 cup Kahlua coffe-flavored liquer
4 ounces vanilla yogurt
6 squares unsweetened chocolate -- grated

Crush chocolate wafers in the food processor and slowly add melted margarine. Press firmly onto the bottom of a 9 inch spring form pan. Blend the puddings with the whipping cream and liqueur. Mix with electric mixer until stiff. Add the softened ice cream to this mixture, stirring to blend. Put in pan on top of crumbs. Blend the yogurt and grated chocolate together and put that on top of the ice cream mixture. Freeze until firm.