Broiled Seafood Sandwich (Oregon, 1974, adapted)

Broiled Seafood Sandwich is a light, easy-to-make dish suitable for a light lunch or warm weather weeknight meal.  It originates from No Regrets (1974), a recipe compilation from the Junior League of Portland (Oregon).   Unlike many of my vintage cookbooks from this era, No Regrets contains an unusually large number of seafood recipes, perhaps because……