In a three-quart saucepan, bring water, salt, dried onions and white pepper to a boil. Slowly stir in grits. Return to a boil, and then reduce heat to medium. Cook for five minutes or until very thick, stirring constantly.
Remove pan from heat.
In a small bowl, combine a small amount of cooked grits with beaten egg. Add back into saucepan with cooked grits blending thoroughly.
Spread grits mixture in bottom and up sides of a lightly greased pie plate. Bake in preheated oven for 20 to 25 minutes or until edges are lightly browned and crust is firm.
Filling
For the filling, sprinkle the bacon, shrimp, sausage, onion and Swiss and cheddar cheese over the crust.
In a small bowl, mix eggs and half and half until combined. Add parsley, garlic, Old Bay seasoning, celery seed, salt and pepper.
Pour egg mixture over crust and bake 55 to 60 minutes in a 350-degree oven.
