Oreo Blitz Torte

We had this ice cream cake for my birthday, my brother's birthday, and my sister's birthday. It's delicious!

Crust:
1 1\3 cups oreo baking crumbs
1\3 butter, melted

Filling:
8 squares semi-sweet chocolate
1\2 cup unsalted butter
1 tbsp. hot coffee(optional)
2 eggs, separated
3\4 cup icing sugar
1 carton(500 ml) Oreo Vanilla ice cream, slightly softened

Topping: (optional)
4 squares semi sweet chocolate
3 tbsp. butter
1 tbsp. corn syrup

For crust, combine Oreo Baking Crumbs and melted butter. Press into 9"(23cm) springform pan. For Filling, melt 8 semi-sweet chocolate squares and 1\2 cup butter over hot, not boiling water, stirring often. Beat egg yolks with hot coffee and icing sugar until light and fluffy. Beat egg whites until just stiff. (Do not over beat). Stir melted chocolate into the yolk mixture and then fold in the egg whites. pour over crust and freeze until firm (about 2 hours). Spoon ice cream over chocolate layer and spread evenly.Freeze until firm and unmold. If using topping, melt semi-sweet chocolate with butter and corn syrup.Pour over top and down sides of torte. Freeze for several hours or over night. Garnish with mini oreos and whipped cream. When ready to serve, slice carefully slice with a hot knife. For a thicker layer, use 1 Litre of ice cream.