For the creamy lemon dipping sauce
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1 cup sour cream OR 1/2 cup mayonnaise + 1/2 cup sour cream
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1 tablespoon lemon juice
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1 tablespoon prepared horseradish
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2 tablespoons ketchup (for a light pink, cocktail-style sauce)
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1 teaspoon chopped parsley
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Few dashes hot sauce, plus salt and pepper to taste
Step 1: Prepare seafood and vegetables
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Drain the crab meat very well and gently squeeze out any excess moisture with paper towels, keeping the lumps as intact as possible.
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Pat the shrimp dry, then finely chop into small pieces so they mix evenly and cook through quickly.
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Finely chop bell pepper, green onion, parsley, and garlic so there are no large hard chunks that make the cakes fall apart.
Step 2: Mix the crab and shrimp cake base
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In a large bowl, whisk together egg, mayonnaise, mustard, Worcestershire sauce, hot sauce, and lemon juice until smooth.
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Stir in bell pepper, green onion, parsley, garlic, salt, black pepper, and optional cayenne until evenly distributed.
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Add 2/3 cup breadcrumbs or panko and mix; the mixture should begin to thicken but still feel moist.
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Gently fold in the crab meat and chopped shrimp until just combined, taking care not to shred the crab.
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If the mixture is too loose to hold a patty shape, sprinkle in a little more breadcrumb, 1 tablespoon at a time, until it just holds together when pressed.
Step 3: Shape and chill the cakes
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Line a tray with parchment paper.
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Divide the mixture into 6–8 equal portions for main-course cakes, or 10–12 smaller portions for appetizers.
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Shape each portion into a firm patty about 2 cm thick, pressing gently so they stay compact without being dense.
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Spread the remaining breadcrumbs in a shallow dish and lightly coat each patty on both sides, pressing so the crumbs adhere.
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Place the coated cakes on the tray, cover, and refrigerate for at least 30 minutes; chilling helps them firm up and hold together while cooking.
Step 4: Fry the crab and shrimp cakes
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Heat 2 tablespoons of oil in a large nonstick skillet over medium to medium-high heat.
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Add the cakes in a single layer without crowding.
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Cook for about 3–5 minutes per side, until deeply golden and crisp on the outside and hot in the center, with the shrimp opaque.
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Adjust the heat as needed so they brown without burning; add a little more oil between batches if the pan gets dry.
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Transfer cooked cakes to a paper-towel-lined plate and keep warm while you fry the remaining cakes.
Step 5: Make the creamy lemon dipping sauce
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In a small bowl, combine sour cream (or sour cream and mayo), lemon juice, prepared horseradish, ketchup, parsley, hot sauce, salt, and pepper.
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Stir until smooth, then taste and adjust with more lemon, horseradish, or hot sauce as you like.
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Cover and chill until serving.
Serving and conclusion
Serve the crab and shrimp cakes hot with the creamy lemon sauce, extra lemon wedges, and a sprinkle of fresh parsley; they pair beautifully with salad, coleslaw, or roasted vegetables. With their crunchy exterior, delicate seafood center, and bright, tangy dipping sauce, these cakes bring restaurant-style elegance to your table using straightforward steps and familiar ingredients, making them a reliable choice whenever you want a special, crowd-pleasing seafood dish.