Preheat oven to 425°F. 

In a large skillet on medium-low heat, add oil and sauté onion and garlic until tender, about 4 minutes. Add diced bell pepper, zucchini, broccoli, and continue sautéing 2 minutes. 

In a medium mixing bowl, whisk together eggs, egg whites, milk, spices. Add the veggies, lightly spray a muffin tin and fill each muffin section half way.

Bake for 10 minutes at 425°F, reduce heat to 350°F and continue baking for 15 minutes. Quiche is done when it puffs and a knife inserted in the center comes out clean