Unroll both tubes of crescent dough; press onto the bottom and 1/2 in. up the sides of a greased 15-in. x 10-in. x 1-in. baking pan. Seal perforations.
Bake at 375° for 7-10 minutes or until lightly browned. Cool on a wire rack.
In a small bowl, beat the cream cheese, sour cream and ranch dressing mix. Spread over crust. Sprinkle with vegetables and cheese. Chill for 1-2 hours. Cut into squares. Refrigerate leftovers. Yield: 2 dozen.