Pick over the crab meat to remove any shell pieces
In a bowl, combine crab meat, breadcrumbs, mayonnaise, egg, Dijon mustard, Worcestershire sauce, lemon juice, parsley, salt, and pepper
Gently mix until just combined
Form the mixture into patties
Chill the patties for 20 to 30 minutes
Heat oil or butter in a skillet over medium heat
Cook the crab cakes for 3 to 5 minutes per side until golden brown
Drain on paper towels
Serve warm with lemon wedges or sauce