PREHEAT oven to 350° F. Grease 9-inch springform pan.
PLACE whole bar of dough in prepared pan. Allow to soften for 5 to 10 minutes. Using fingertips, pat dough gently to cover bottom.
BAKE for 18 to 19 minutes or until light golden brown. Cool completely in pan on wire rack.
COMBINE cream cheese, sugar and CHOCO BAKE in large mixer bowl until well blended. Add whipped topping; stir until just blended. Spoon over cookie crust; smooth top. Drizzle with melted chocolate. Refrigerate for 3 to 4 hours or overnight. Remove side of pan.