Heat oven to 375°. Bring a large pot of lightly salted water to a boil. Add broccoli. Cook 3 minutes; drain. Roughly chop and cool slightly. Set aside.
Meanwhile, heat a skillet over medium heat. Cook bacon until slightly crispy, 8 to 10 minutes. Dice and set aside to cool.
Whisk eggs, egg whites and milk. Stir in cheese, salt, pepper, broccoli and bacon.
Coat a 12-cup nonstick muffin tin with nonstick cooking spray. Ladle mixture among cups. Bake at 375° for 20 to 25 minutes, until cooked through.
Cool slightly. Remove quiches with a small offset spatula. Cool completely and refrigerate.
To serve: Wrap in a paper towel and microwave for 30 to 45 seconds, until warm.