Melt butter in 3 qt saucepan, remove from heat and cool add water, eggs, seasonings (salt pepper and garlic powder to taste). Add shrimp, scallops, crab and coarsley crushed stuffing mix. Combine well to form a fairly moist stuffing (add more water if necessary).
Place fish in 8x11 baking dish, top with stuffing mix, and cook in a 350 degree oven until fish flakes nicely and shrimp and scallops are done (about 20-25 minutes).
Meanwhile, prepare a very thick white sauce with 2 cups milk, flour and butter. Cool slightly and add canned clams with their liquid. Stir until smooth.
Serve casserole topped with the clam sauce.
Submitted by: Susan D.