Instructions

  1. Cook onion, bell pepper, and celery in 1 tablespoons butter in a 10" skillet over moderately low heat, stirring occasionally, until vegetables are softened, about 8 minutes.
  2. Whisk together egg, sour cream, mustard, Worcestershire sauce, cayenne, and salt in a large bowl, then stir in scallion, cooked vegetables, and 1/4 cup saltine crumbs.
  3. Gently stir in crabmeat, then form into 4 cakes (2 1/2 to 3 inches in diameter).
  4. Dredge cakes in remaining saltine crumbs.
  5. Heat oil and remaining 2 tablespoons butter in cleaned skillet over moderate heat until foam subsides, then cook crab cakes, turning once, until golden brown, 8 minutes total.