Mix: yolks, butter (melted), worcestershire sauce, prepared mustard, minced parsley, onion and chopped ham. Fill eggs and place in baking dish.

Sauce: blend, 3 Tablespoons butter and flour; let bubble. Boil water with chicken boullian. Season with salt, pepper, paprika and half and half.

Pour over eggs and sprinkle 1 cup of grated american cheese. Bake at 325 covered for 1 hour.