Ingredients

  • 19 oz. Philadelphia cream cheese, softened
  • 1 pt. sour cream
  • 1 tsp. cream of tartar
  • 1 tsp. vanilla
  • 3 c. sugar
  • 1 1/4 c. graham cracker crumbs
  • 6 eggs, separated
  • 1/2 tsp. baking soda
  • 1/2 tsp. salt
  • 3 Tbsp. butter, melted

Method

  • Combine 1 cup graham cracker crumbs with 3 tablespoons melted butter.
  • Press in bottom of 9-inch spring-form pan.
  • Refrigerate. Set aside remaining 1/4 cup of graham cracker crumbs.
  • Preheat oven to 325°.
  • Separate eggs, keeping egg yolks whole.
  • Set yolks aside. Add 1 teaspoon cream of tartar to egg whites, beat until foamy; set aside.
  • Beat cream cheese until smooth.
  • Gradually add 3 cups sugar while beating.
  • Add baking soda and salt; mix well.
  • Add sour cream; mix well.
  • Add vanilla; mix.
  • Add egg yolks one at a time, mixing thoroughly after each one.
  • Add egg whites; mix thoroughly. Pour mixture into refrigerated spring-form pan.
  • Sprinkle remaining 1/4 cup graham cracker crumbs on top of mixture.
  • Bake at 325° for 1 hour and 15 minutes.
  • Increase to 350° until cake is firm.
  • Turn oven off and crack door.
  • Let cake cool in oven.
  • When cool, undo spring-form pan and serve plain or with topping.