Marble Cheesecake

Directions

1. 1
   Combine crumbs, sugar, and margarine; press onto bottom of 9-inch Spring- form cake pan.
2. 2
   Bake at 350 degrees F., 10 minutes.
3. 3
   Combine cream cheese, sugar and vanilla, beating at medium speed on electric mixer until well blended.
4. 4
   Add eggs, one at a time, mixing well after each addition.
5. 5
   Blend chocolate into 1 cup batter.
6. 6
   Spoon plain and chocolate batters alternately over crust; cutting through batters with knife several times for the marble effect.
7. 7
   Bake at 450 degrees F., 10 minutes.
8. 8
   Reduce oven temperature to 250 degrees F.; continue baking 30 additional minutes.
9. 9
   Loosen cake from rim of pan; cool before removing rim of pan.
10. 10
    Chill.