Healthy Crustless Quiche

I have made this quiche a multiple times now and love having it on hand all during the week for a quick, healthy and filling breakfast. I found it originally on The Lyons' Share Wellness. She has some great super healthy recipes.

Ingredients (6 servings)
9 eggs
1 cup liquid egg whites (or add an additional 4 eggs)
1/2 cup milk, unsweetened almond milk, or other unsweetened milk alternative
6 cups of vegetables (I always use onion, tomatoes and spinach plus various combos of broccoli, cauliflower, zucchini, asparagus, kale, etc)
1/2 cup salsa
(I like to sprinkle a little low fat cheese on top)

Preheat oven to 400 degrees.
Grease or spray 9x13 casserole dish.
Chop veggies into bite-sized pieces, and lay in greased dish.
In a separate bowl, whisk together eggs, egg whites, and seasoning. Pour egg mixture on top of veggies.
Bake 45-50 minutes or until top is browned and middle of casserole has set.