1/3 cup semisweet chocolate chips
1 1/2 cups vanilla wafer crumbs
3/4 cup hazelnuts - toasted, skinned and coarsely chopped
2 tablespoons white sugar
3 tablespoons butter, melted
3 (8 ounce) packages cream cheese, softened
1 cup white sugar
3 eggs, lightly beaten
3 tablespoons hazelnut liqueur
1 cup semisweet chocolate chips
2/3 cup semisweet chocolate chips
13 skinned, toasted hazelnuts
4 tablespoons sour cream
1 tablespoon hazelnut liqueur