01 - Preheat oven to 375°F.
02 - Unroll crescent dough and press it into a 13x9-inch baking pan, sealing seams.
03 - Bake crust for 12 to 15 minutes until golden brown, then cool completely.
04 - Combine cream cheese, sour cream, mayonnaise, and ranch dressing mix until smooth.
05 - Evenly spread the creamy mixture over the cooled crust.
06 - Distribute chopped broccoli, cauliflower, bell peppers, carrots, and green onions evenly over the creamy layer.
07 - Gently press the vegetables into the spread to help them adhere.
08 - Sprinkle chopped parsley on top if desired.
09 - Cut into 24 bars and serve chilled.