To make pastry, blend butter, sugar, salt and vanilla then egg and flour to form a soft dough. Refrigerate 30 minutes then pat over bottom and up sides of a 10-inch springform pan. Chill.
To make cheese mixture, cream cheese with sugar, eggs, whipping cream and sour cream.
Peel and slice apples and arrange in prepared shell. Apple layers should extend almost to top of pastry. Pour cheese mixture over. Sprinkle with cinnamon sugar.
Place on baking sheet and bake in a 350°F oven until golden brown on top and cheese mixture is set, about 1 1/4 to 1 1/2 hours. Refrigerate overnight before serving.
Makes 12-16 servings
