HEAT oven to 375ºF.
UNROLL each package of dough into 2 rectangles. Press onto bottom and up sides of 15x10x1-inch pan, firmly pressing seams and perforations together to seal.
BAKE 11 to 13 min. or until golden brown; cool.
MIX reduced-fat cream cheese, dressing and seasonings until well blended; spread onto crust. Top with remaining ingredients. Refrigerate 2 hours.
KRAFT kitchens tips:
Substitute chopped cucumbers and/or chopped red peppers for one or more of the chopped vegetables.
Substitute KRAFT Real Mayo Mayonnaise for MIRACLE WHIP Salad Dressing.