Now that I have pretended to use a real recipe, the truth is, I use whatever veggies including asparagus, broccoli and fresh basil that look good. I vary quantities of veggies depending on who I am making it for. If it's my kids fewer, if it's the quilting group you can't have too many veggies. I make it early or the day before and let it sit in the fridge to seep. I try to keep the chopped vegetable size relatively small to medium depending on how delicate they are and not overcook before they get into the oven. I love skipping the cooking the noodles part, hence the extra bottle of sauce, because it's so fast to put together.