1. Unroll crescent dough and preheat oven according to package directions. Place in 14 x 17 jelly roll pan. Press perforations to make solid. Bake according to package directions. Cool. 2. Mix cream cheese, dressing and mayonnaise. Spread on crust. Finely chop vegetables and spread evenly over top. 3. Refrigerate. Slice into squares before serving.