Last night I made the following and it is pretty good:
7 egg whites, 2 whole eggs
2 cups of mashed up frozen broccoli (defrosted then mashed into smaller pieces)
1 cup of shredded skim mozarella
pepper
red pepper flakes
I mixed that all up in a bowl, sprayed a muffin pan with Pam then filled the muffin cups about 2/3rd full. I baked it on 350 for 20-25 minutes (watched it after the 20 minute mark to make sure it firmed up). I let them cool then scooped them out of the muffin cups. Now I have them for the week to eat
Also regarding egg whites, they are almost the perfect protein. Egg yolks aren't bad but they just aren't as good nutritionally as egg whites. You can make very low calorie, high protein dishes using mostly egg whites. I do love my hard boiled eggs though.