take any veggie you have on hand and steamed, saute, roast them.
you want a total of 4 cups total. my favorite combo, onions, mushrooms, potato and zucchini.
spray a 9 x 13 baking dish with Pam. place veggies in dish. pour a dozen egg whites over veggies.
Bake in 375 oven about 30 mins or until set. once set, sprinkle parmmesan cheese on top (about 1/2 a cup in total) and put back in oven until slightly brown.
NOTE: feel free to use egg yolks, protein, or cheese. If you are sauteing the veggies seasons appropriately as you cook them.
This is actually great cold.
Here's three quick variants from google:
Egg/Veggie/Meat Crustless Quiche