3 eggs,
1 cup milk or half and half
2 heaping tablespoon flour
1 pinch cayenne pepper -4 shakes
3/4 teaspoon salt
1/8 teaspoon black pepper

Filling suggestions
Anything will do. Quiche is great for using leftovers. Here are some suggestions.
~1 zucchini, medium sliced. Fry until brown on both sides.
~1 onion, small, thin sliced, sauteed until soft.
~1/2 cup shredded cheese, any cheese but hard cheeses like Parmesan, provolone, etc.
~2 tablespoons sliced black olives
~1 tablespoon crumpled bacon.
~1 sausage, sliced thin or crumbled.
~1 10 oz package frozen chopped spinach, thawed and squeezed dry.
~Almost anything in the fridge will work.

Add fillings to thawed deep dish pie crust. Pour custard over fillings. (Place a cookie sheet under pie to catch overflow.)
Bake until knife inserted in center comes out clean.
Let stand 10 minutes before cutting.

350° 35 minutes