1. In frying pan, melt butter over medium/high heat. Saute potatoes until browned and crusty, about 5 minutes. Sprinkle with celery salt and mix well. Spread evenly on 9- inch pie plate or quiche dish.
2. Top with mushrooms, onions and green pepper. Pour beaten eggs into pan.
3. Bake in pre-heated oven at 325 degrees for 20 minutes or until set.
4. Remove from oven, sprinkle with cheese and bacon and cook another 10 minutes.
Tip: May substitute ham for bacon.