Mix butter, sugar, and graham cracker crumbs and press into bottom and up sides of a 9-inch spring-form pan. Bake 10 minutes at 350° F.
In a large mixing bowl, beat sweet potatoes until smooth. Add cream cheese and beat until blended. Add remaining ingredients except whipped cream and beat until well mixed. Pour into cooled crust and bake at 350° F for 50 minutes.
Store in refrigerator but let stand at room temperature for about 30 minutes before serving.
Serve with whipped cream.Makes 4 Source: