Preheat oven to 350. Coat a 13 x 9 inch pan with cooking spray. to make the base, mix ingredients and stir til soft dough forms. Press into bottom of pan and bake for 15 to 18 minutes or til light golden brown. Let cool
To make filling, in another bowl, beat cream cheese til smooth. Add condensed milk; beat til blended. Beat in coffee, vanilla, and eggs. Stir in chocolate chips. Pour over cookie base. Bake for 35 to 40 minutes or til set. Let cool for 30 minutes. Refrigerate for 30 minutes to cool completely.
To make topping, beat cream cheese on medium speed til smooth. Gradually beat in whipping cream; beat 2 minutes longer, or til fluffy. Spread over cooled bars. Refrigerate for 2 hours. Garnish with chocolate curls. Makes 36 bars.