Preheat oven to 350 degrees. Spray 12 muffin tins with nonstick cooking spray and set aside.
In a medium nonstick skillet, spray with a little nonstick cooking spray and sauté peppers and onions until browned and tender, 5 minutes. Remove from heat.
In large bowl, whisk eggs and egg whites together with salt and pepper. Stir in turkey and cooked veggies. Using 1/4 cup measure, pour into prepared muffin tins.
Bake 12-15 minutes or until egg is cooked completely. Cool 5 minutes then remove all egg cups from warm pan.
Store in airtight container in refrigerator for up to 3 days. To reheat, microwave for 30 seconds.