Preheat oven to 350 degrees F
Lightly spray a 12-cup muffin pan with oil.
In a small bowl, combine your chopped vegetables - broccoli, red pepper, onion.
Add about a spoonful of your mixed vegetables in each muffin cup.
Add egg whites to each muffin cup, covering veggies but not to overfill to the top.
Sprinkle feta cheese on top of egg whites in muffin cup.
Bake for 15-20 minutes. Enjoy!