HEAT oven to 375°F.
UNROLL dough; separate into 4 rectangles. Press onto bottom and up sides of 15x10x1-inch pan to form crust, firmly pressing seams and perforations together to seal.
BAKE 11 to 13 min. or until golden brown; cool.
MIX cream cheese spread, dressing, dill weed and onion salt until well blended. Spread onto crust; top with remaining ingredients. Refrigerate 2 hours.