Butter a 10 inch pie pan and sprinkle 4 ounces shredded Cheddar cheese (can use Swiss). Take 6-7 slices bacon (fried crisp) and crumble; put in next. A few sauteed mushrooms, 4 beaten eggs, 1/2 cup chopped onions, 1/2 cup flour, 2 tablespoons butter, 1/2 teaspoon salt, some pepper, and 1 1/2 cups non- fat milk. Blend and mix. Pour into pie plate. Bake 35 minutes at 350 degrees. If pan is metal, bake a little longer. Let stand 3-4 minutes before serving. Excellent.