CHOCOLATE MARBLE CHEESECAKE

Serves 8 to 10

Crust:
1 1/2 cups Graham cracker crumb
1/4 cup sugar
6 tablespoons melted butter
1 tablespoon cocoa

Filling:
3 8-ounce cream cheese, softened
2 teaspoons vanilla
1 cup sugar
5 eggs
1/2 cup sour cream
3 ounces semi sweet chocolate

Preheat oven to 350 degrees. Crust: Combine first 4 ingredients. Place in a food processor until fine.
Press on bottom and sides of a greased 9 inch spring form pan. Set aside.

Filling:
Beat cream cheese, vanilla and sugar until smooth. Add eggs, one at the time. Blend until smooth. Stir in sour cream. Melt chocolate. Combine about 3 cups of batter with cooled chocolate. Pour plain cheese mixture into crust and gradually add chocolate mixture, using a zigzag motion to blend.
Bake 40 minutes or until firm around edges but still soft in the center. Remove from oven.
Run knife over side of pan. Cool cake. Remove sides of pan. Chill.