Butter 10 inch pie plate. In it sprinkle:

4 oz. shredded cheese, (Colby, cheddar)
6 to 7 slices crisp bacon (can use ham)
Mushrooms, if desired

Mix together:

4 eggs
1/2 c. chopped onion
1/2 c. flour
2 tbsp. butter, melted
1/2 tsp. salt
1 1/2 c. milk

Blend 1 minute. Bake 350 degrees for 35 minutes. Let it stand 3 or 4 minutes before serving.