In skillet, cook the bacon until crisp. Remove with a slotted spoon to paper towels.
Drain, reserving 1/3 cup drippings. In the drippings, saute the onion until tender. Stir in the flour, salt and pepper until blended. Gradually stir in the milk. Bring to boil and cook and stir for 2 minutes. Remove from the heat.
Spread 1/2 cup of the sauce in a greased 13x9x2" baking dish. Layer with four noodles, a third of the egg and bacon, cheese and sauce.
Repeat the layers twice. Sprinkle with Parmesan cheese.
Bake uncovered at 350 degrees for 35-40 minutes or until bubbly. Sprinkle with parsley. Let stand 15 minutes before cutting.
Recipe Notes
*Can be made the night before and refrigerated. To serve, remove from the refrigerator 30 minutes before baking. Bake as above.