Veggie Supreme Egg Bake Recipe. Do you have a family of picky eaters that you're trying to teach how to eat more vegetables? This easy, healthy vegetarian breakfast casserole, frittata, or crustless quiche is just the thing! Make ahead recipes like this are great to have up your sleeve for overnight guests with kids or just adults. You'll need frozen hashbrowns or diced potato, mushrooms, spinach, red pepper, cheddar cheese, eggs and half and half.