01 - Gently mix crab meat, celery, red bell pepper, green onions, panko breadcrumbs, beaten egg, mayonnaise, Dijon mustard, parsley, Old Bay seasoning, cayenne pepper, salt, and black pepper until just combined. Avoid overmixing to prevent breaking up crab meat.
02 - Place egg roll wrapper on clean surface with corner facing you. Add 2–3 tablespoons crab mixture to center. Fold bottom corner over filling, fold in sides, roll tightly, and seal edge with water. Repeat with remaining wrappers and filling.
03 - Pour 2 inches vegetable oil into deep skillet or pot. Heat to 350°F, maintaining temperature throughout frying process.
04 - Fry egg rolls in batches, turning occasionally, until golden brown and crisp, about 3–4 minutes per batch. Transfer to paper towels to drain excess oil.
05 - Whisk together mayonnaise, Dijon mustard, lemon juice, hot sauce, salt, and pepper in small bowl until smooth and well combined.
06 - Serve crab cake egg rolls immediately while hot, accompanied by dipping sauce on the side.