In a medium bowl, gently combine the crab meat, mayonnaise, beaten egg, breadcrumbs, Dijon mustard, Worcestershire sauce, Old Bay seasoning, salt, and pepper. Be careful not to overmix, as this can break up the crab meat too much.
Form the mixture into 4 equal-sized patties.
Heat the butter and vegetable oil in a large skillet over medium-high heat.
Carefully place the crab cakes in the hot skillet and cook for about 4-5 minutes per side, until golden brown and heated through.
Serve immediately with your favorite sauce, such as tartar sauce or remoulade.
Notes
These crab cakes are best served fresh. You can also bake them at 400°F (200°C) for about 15-20 minutes if you prefer.