Directions
Combine first 5 ingredients in medium bowl; blend well.
Press into bottom and 2 inches up sides of a 10 inch spring form pan.
Bake at 350 degrees F for 5 min. Cool.
Combine cream cheese and 1 cup sugar; beat at medium speed until fluffy.
Add sour cream and vanilla; mix well.
Stir in melted white chocolate.
Beat egg whites at high speed until foamy; add cream of tartar beating until soft peaks form.
Fold egg whites into cream cheese mixture; spoon into crust.
Bake at 325 degrees F for 55 minutes; turn oven off.
Leave cheesecake in oven 30 minutes, open oven door and leave in an additional 30 minutes.
Cool.
