4 pkgs. Philadelphia cream cheese
18 zwieback or graham crackers
2 tablespoons butter
2 tablespoons sugar
1 cup plus 2 tablespoons sugar
2 tablespoons flour
a pinch of salt
1/2 vanilla bean, finely cut
4 egg yolks, beaten
1 cup sour cream
4 beaten egg whites

Crush the crackers finely and makes with two tablespoons each of butter and sugar.

Allow cream cheese to soften at room temperature. Beat softened cream cheese together with 1 cup plus 2 tablespoons of sugar. Add to level tablespoons flour, a pinch of salt, and finally chopped vanilla bean.

Stir in beaten yolks of four eggs. Combine and add 1 cup of sour cream. Fold in four stiffly beaten egg whites and pour into the crumb lined pan.

Bake at 350°F for about one hour.