Cook the bacon and keep the bacon grease.
Sautee the chopped onions in the bacon grease and then drain.
Preheat oven to 350 degrees.
Whip the eggs with the half-n-half until smooth and set aside while you load the pie shells.
Divide the onions evenly between the 2 pie shells, next divide the bacon between the 2 pie shells. Now do the same with the cheese.
Pour half of the egg mixture over the ingredients in each pieshell...using finger tips...mix the ingredients thoroughly with the eggmixture.
Optional: Sprinkle tops with ground nutmeg.
Bake for 45 minutes or until knife inserted into the middle comes out clean. You may need to cover the crusts at the 30 minute mark to prevent over-browning.