Egg Puffs

1.Preheat oven to 450 degrees
2.Separate egg whites from yolks, putting the egg whites into a mixing bowl and the egg yolks each into a separate small bowl
3.With electric mixer, beat egg whites until stiff peaks form (2 or 3 minutes)
4.Gently fold in the grated cheese
5.Form 4 puffs on the baking mat with an indent in each puff (see photo)
6.Bake for 3 minutes. (You could put in the egg yolks now if you like them a little more cooked)
7.Remove from oven, drop one egg yolk into each indented puff.
8.Bake for 3 more minutes.
9.Remove from baking sheet with a spatula, sprinkle with salt and pepper, add your butter on top and eat!