1 (9 inch) unbaked pie shell (I use Pillsbury refrigerated crusts)
2 tbsp. butter
1 med. onion, diced
12 to 14 slices bacon (or equivalent ham)
4 eggs
2 c. half & half (or part half & half - part milk)
3/4 tsp. salt
Pinch of nutmeg
Pinch of cayenne pepper
1/8 tsp. pepper
1 c. grated Swiss cheese (I use half Swiss - half Cheddar)

Saute onions in butter until soft but not brown. Fry bacon until crisp. Drain and break into small pieces. Combine eggs, cream, salt, nutmeg, cayenne and pepper. Beat until well mixed. Sprinkle pie shell with bacon. Spread onions over bacon. Cover with grated cheese. Pour egg mixture in carefully. Bake at 425 degrees for 15 minutes, then reduce heat to 300 degrees and bake 40 minutes or until knife inserted into center comes out clean.