This is a great recipe for a gathering. Although I left out the mushrooms and potatoes, I still needed to use two large baking sheets to accommodate all the vegetables. Even though the veggies were coated with olive oil, they ended up steaming from the aluminum foil trapping their moisture. In the future, I will roast them uncovered the entire time because I prefer my vegetables to be more caramelized. Thank you, Pat, for Roasted Gourmet Vegetables, a recipe which provides an easy method for pleasing a lot of hungry folks.