I enjoy making this Meatless Veggie Pasta Bake because it's so easy to change up the vegetables. Don't have (or like) yellow squash? Use zucchini, bell peppers, or any other vegetable in place of the squash. Change up the pasta too, I don't always have ziti on hand so I use whatever I have in the pantry. For those of you who aren't fond of meatless (like my husband), you can easily add cooked ground beef or sausage, chicken, or smoked sausage. My kind of meal - simple and adaptable for everyone.