Whip the egg whites to soft peaks.Combine the rest of the ingredients in a separate bowl.Fold the egg whites into the mix.Cover and let sit in a fridge for 15-20 minutes.Preheat oven to 400FGrease muffin tray with butter.Scoop 2 tbsp of the batter into each cup.Optional - sprinkle any topping you like, shredded cheese, chunks of cheese, jalapenos, bacon, etc.Bake for 20 minutes, or until golden brown, and a toothpick comes out clean.Let sit on a cooling rack for a few minutes, and butter before serving, because butter makes everything better.