In a bowl, beat egg until frothy. Add mayonnaise, mustard, Worcestershire sauce, and parsley and whisk to blend well.
Pour crab into a colander and remove any shells. Add breadcrumbs to crabmeat in colander and gently mix by hand, being careful not to break crab lumps. Fold crab into mayonnaise mixture gently with spatula just until mixed. Cover and chill 20 minutes.
Preheat oven to 425 degrees. Using a spoon, divide mixture into 5 to 6 portions. Shape into cakes and place on a greased cookie sheet. Bake in preheated oven until golden brown, about 10-12 minutes. Makes 5 to 6 servings. Enjoy!