1 pkg. Oreos
4 whole eggs
1 1/4 c. sugar
4 tbsp. butter
4 (8 oz.) pkg. cream cheese
2 egg whites
2 tbsp. flour

Be sure to grease your springform pan. Crush Oreos, save 1/2 cup of crumbs. Blend remainder with butter for crust. Press into the bottom of a springform pan. Add 1/2 of blended cheese mixture. Sprinkle reserved crumbs and add remaining cheese mixture. Bake at 425 degrees for 15 minutes and 225 degrees for 50 minutes. Cool. Cover with 3/4 cup sour cream and 1/4 cup sugar if desired.