Chocolate Decadence Cheesecake

8 oz Semi-sweet Chocolate
1 lb Cream cheese
3/4 c Sugar
4 Eggs
1 ts Vanilla extract
1 1/2 c Sour cream
WHIPPED CREAM TOPPING
1/2 c Heavy Cream
1 tb Sugar
1/4 c Sour cream
1 tb Kahlua
Chocolate curls for garnish

Preheat oven to 300 degrees F.

Place chocolate in the top of a double boiler and melt over hot water. Let cool.

In a mixer, blend together the cream cheese and sugar. Add eggs and vanilla and mix until smooth. Blend in chocolate and sour cream.

Pour into a greased and floured 9-inch springform pan.

Bake for 30 to 35 minutes or until the outer edge is set and the inner centre is still glossy.

Turn off the oven, leave the door ajar, and let cool in the oven for 1 hour longer. Chill.

When completely cooled, and ready to serve, remove pan sides.

For whipped cream topping:
In a small bowl, whip cream until stiff peaks form and beat in sugar, sour cream and liquer. Spoon whipped cream onto cake and sprinkle with chocolate curls.