Cappucino Chocolate Cheesecake

1 1/4 c Chocolate wafers, crushed

1/8 ts Cinnamon

1 pk Light cream cheese (8 oz)

1 c Sugar

1 c Unsweetened cocoa powder

1 ts Cocoa powder for garnish

2 1/2 c Sour cream

2 Eggs

2 T Coffee liqueur

1 ts Vanilla

Preheat oven to 350F. Stir together wafer crumbs and cinnamon. Pat into bottom of 9-inch springform pan. Beat cream cheese until light and fluffy. Beat in sugar and cocoa powder. Beat in egg. Stir in 2 cups sour cream, coffee liqueur and vanilla. Turn into prepared pan. Bake for 30 minutes or until set. Spread remaining sour cream evenly over top. Return to oven 1 minute to glaze top. Cool to room temperature, then chill thoroughly, covered. Remove from springform pan. Just before serving, dust top with cocoa powder.