Cook the chopped bacon in a large nonstick skillet over medium heat until crisp.
In large bowl, combine bacon, pepper, nutmeg, egg whites and egg. Stir well and set aside.
Add onion to the skillet; cover and cook over medium heat 5 minutes or until crisp tender, stirring occasionally. Add water and sugar. Sauté 5 minutes or until onion is tender and golden brown. Add spinach; cover and cook 2 minutes, or until spinach wilts. Gently stir in egg mixture and spread evenly in bottom of skillet. Cook over low heat 5 minutes or until almost set.
Wrap handle of skillet with foil; place skillet in the oven, and bake for 5 minutes or until set. Sprinkle with mozzarella and bake one more minute.
Notes
If you are preparing this dish as GLUTEN- FREE, just be sure to use a brand of bacon that is known to be GF.