The base for this is egg whites but you can use whole eggs if you would like. And the ingredients are endless - basically anything you would want in an omelet.
Egg White Breakfast Muffins with Spinach and Sausage
1/4 cup egg whites
1 cup cooked sausage, drained
1/2 cup shredded cheddar cheese
1/2 cup frozen spinach, thawed and drained
salt/pepper/garlic powder to taste
Pre-heat oven to 375 degrees. Add egg whites to muffin tins and top with each of the ingredients - adding cheese last. Bake for 20-25 minutes or until firm. These freeze well - just pop them in the microwave for 30 seconds or so and enjoy!