Mix together the melted butter and cookie crumbs. Place the crumbs at the bottom of the 8 inch springform cake pan (or line it with plastic wrap), flatten with the bottom of a glass until firm, place in the refrigerator while the chocolate ice cream softens.
ICE CREAM FILLING
Remove the chocolate ice cream from the freezer and let sit at room temperature until soft, stir in the mini chocolate chips. Remove the base from the fridge and spread with the chocolate ice cream, cover with plastic and freeze.
While the cherry ice cream softens or vanilla, mix in the cherry slices and 2 tablespoons of cherry juice if using vanilla ice cream, remove the cake from the freezer, remove the plastic, spread with the cherry ice cream and freeze.
While the pistachio ice cream softens, stir in the pistachios, remove the plastic and spread on top of the cherry ice cream. Cover and freeze over night.
Before serving, whip the cream until soft peaks appear then add the sugar and beat until firm. Spread the whipped cream on the top of the uncovered cake, with the back of the spoon make waves like clouds. Sprinkle with extra chips or chopped pistachios. Enjoy!
Notes
If there are cherry bits in the cherry ice cream then you don't need to add the ¼ cup cherries. If you can't find cherry ice cream then you can use vanilla and add the ¼ cup sliced cherries and 2 tablespoons of cherry juice. Freeze leftover spumoni ice cream cake in an airtight container at the back of the freezer for up to 2-3 months although I think it is best within a few days!