Preheat the oven to 350 degrees F. Spray a 12 cup muffin tin generously with a non-stick cooking spray.
Combine 12 egg whites (approximately 2½ cups), 1 cup cottage cheese, ½ teaspoon salt, and ½ teaspoon pepper in a blender. Blend until smooth.
Pour the mixture into a large bowl and stir in 1 cup shredded Monterey Jack cheese, ½ cup chopped roasted red peppers, ½ cup finely chopped spinach, and 2 tablespoons green onions.
Pour this mixture evenly into the muffin tins. Fill each tin approximately 3/4 of the way full as the eggs will rise as they cook.
Bake for 20-25 minutes or until the eggs are set (not jiggly).
Remove the pan from the oven and let the egg bites rest for 5-10 minutes. Gently remove the egg bites from the pan with a spoon and then they are ready to serve and enjoy!
Notes
Refrigerate the leftovers in an airtight container for up to 1 week.