CHOCOLATE GRAND MARNIER CHEESECAKE Recipe

In large mixing bowl whip cream cheese, eggs, sugar, 1
teaspoon vanilla and Grand Marnier for 5 to 8 minutes. While
blending, make crust by mixing graham cracker crumbs and
butter. Press crust into spring-form pan. Put chocolate in
double boiler to melt. Then fold in 1 cup sour cream (do not
stir) into the cream cheese mixture. Take 2 cups of the cream
cheese-sour cream mixture and stir into melted chocolate. Add
this to the remaining cream cheese mixture and stir until
marbled (brown and white streaked). Pour into crust. Bake 20
minutes at 350 degrees. Cool 45 minutes. Mix topping and spread over
cake. Refrigerate before serving.