Preheat oven to 375 degrees F. Roll out and layer the crescent roll dough to form the pizza crust. Pinch the two layers together. Place the dough on a 9x13-inch baking sheet.
Bake crust for 12 minutes. Remove from oven and cool 15 minutes.
In a small mixing bowl combine cream cheese, mayonnaise, and dry ranch dressing. Spread the mixture over the cooled crust. Arrange broccoli, tomatoes, green bell peppers, cauliflower, shredded carrots, and cheddar cheese over the cream cheese layer.