Preheat oven to 400°.
Beat egg substitute and eggs in a large bowl until fluffy. Add 3/4 cup cheddar cheese, 3/4 cup Jack cheese, milk, flour, baking powder, salt, and cottage cheese.
Heat a large nonstick skillet over medium-high heat. Coat pan with cooking spray. Add zucchini and the next 3 ingredients (through mushrooms); sauté for 5 minutes or until tender. Add the zucchini mixture and parsley to egg mixture. Pour mixture into a 3-quart casserole dish coated with cooking spray. Top with the remaining 3/4 cup cheddar cheese and 3/4 cup Jack cheese. Arrange tomato slices over cheese. Bake at 400° for 15 minutes. Reduce oven temperature to 350° (do not remove dish from oven), and bake for 35 minutes or until lightly browned and set.
Note: Substitute corn or spinach for some of the vegetables, if you wish.
Wine note: Because of its eggy, custardy character, quiche is excellent with chardonnay. But this version goes in a "greener" direction, incorporating lots of zucchini, bell pepper, and parsley. So serve it with sauvignon blanc, a wine that has a touch of green flavor. Try the Honig Sauvignon Blanc 2005 from Napa Valley, California ($15). --Karen MacNeil