SET cream cheese out to soften.
PREHEAT oven to 350°F.
LINE an 8″ baking pan with foil or parchment paper, leaving an overhang on all sides.
MIX pie crust and sugar, add butter and blend until moistened.
SPREAD pie crust mixture in bottom of pan and pressing with back of spoon or heel of hand to firm and even.
BAKE crust 12-15 minutes, set aside to cool.
BLEND softened cream cheese until smooth. Add all filling ingredients except chocolate and mix thoroughly.
MELT chocolate and stir into 1 cup filling mixture.
POUR remaining filling into prepared pan.
SWIRL chocolate mixture by drizzling chocolate sauce over cream chees batter then "drawing" squigglies through batter using a butter knife, chopstick or thin spatulata..
BAKE 40-50 minutes. Test for firmness by pressing gently on top. If soft and not set cook for another 5-10 minutes or until firm but not brown.
COOL and CHILL for at least 2 hours.
CUT into bars with wet knife.