From The Joy of Cooking
5 8oz packages cream cheese
1-3/4 cups sugar
1/2 teaspoon vanilla
5 large eggs
2 large egg yolks
1/2 cup heavy cream
Preheat oven to 500 degrees.
In a large bowl, mix cream cheese until creamy. Gradually add sugar until until mixture is creamy and smooth. Then mix in vanilla. Mix in eggs one at a time, just until incorporated. Then mix in heavy cream.
1-1/2 cups chocolate wafer crumbs
6 tbsp butter, melted
1/4 cup sugar
Mix well and line spring form pan with crumb mixture. Pour cheesecake mixture in pan and smooth the top. Bake at 500 degrees for 15 minutes. Turn temperature to 200 degrees and bake for 1 hour. Prop oven door open with a wooden spoon and let cheesecake cool for 30 minutes in oven. Remove from oven and let cool completely before unmolding from spring form pan. Refrigerate for at least 6 hours before serving.