Measure crumbs into medium-sized mixing bowl. Toss with sugar and melted butter until well mixed. With back of spoon, press mixture to bottom and sides of 8 inch pie plate, leaving small rim. Place in moderate oven (375 degree) for 8 min. Remove to wire rack to cool completely. Spread softened Heavenly Hash Ice Cream evenly into prepared crust. Freeze until firm. At serving time, garnish with whipped cream if desired.