One of the greatest lunch or brunch dishes ever invented. Prepare in advance, freeze, and bake when needed. All you need to complete the meal is a nice tossed salad.
Combine the cheese and flour and sprinkle into the pie shell. Spread the ham evenly over this. Combine the eggs, milk, salt and mustard. Beat until smooth and pour evenly over the cheese and ham.
Bake at 375 degrees for 45 minutes, or until the custard is set. Serve warm, garnished with chopped parsley.