Preheat oven to 350 degrees fahrenheit Coat a 2 quart baking dish with fat free cooking spray.
Layer the broccoli, asparagus, spinach, squash, and onions in the prepared baking dish.
In a small bowl, mix together the soup, water, oregano and/or basil, salt and pepper. Pour over the vegetables. Cover with foil and bake until the broccoli is crisp-tender, (30 to 35 minutes). Uncover and serve immediately.