Marble Cheesecake

Directions

1. 1
   Prepare graham cracker crust; set aside.
2. 2
   Combine cream cheese, 3/4 cup sugar, sour cream and 2 teaspoons vanilla in mixer bowl.
3. 3
   Add flour, 1 tablespoon at a time, blending well.
4. 4
   Combine cocoa and 1/4 cup sugar in small bowl.
5. 5
   Add oil, 1/2 teaspoon vanilla and 1/2 cup of cream cheese mixture; mix until well blended.
6. 6
   Spoon plain and chocolate mixture alternately into prepared crust, ending with dollops of chocolate on top.
7. 7
   Gently swirl with knife or spatula for marbled effect.
8. 8
   Bake at 450° for 10 minutes.
9. 9
   Without opening oven door, decrease temperature to 250° and continue to bake for 30 minutes.
10. 10
    Turn off oven.
11. 11
    Let cheesecake remain in oven for 30 minutes more without opening door.
12. 12
    Remove from oven; cool 10 minutes.
13. 13
    Loosen cake from side of pan and remove from pan.
14. 14
    Cool completely; chill thoroughly.