Shrimp Po’ Boy Sandwich Recipe: Crispy Cajun Shrimp on French Bread

A proper shrimp po’ boy is crispy, a little messy, and packed with flavor in every bite. Between the crunchy shrimp, cool shredded lettuce, juicy tomato, and creamy remoulade, it’s easy to see why this sandwich is a staple. This recipe keeps those traditional flavors while staying approachable enough to make at home, with shrimp that remain crisp and well seasoned from the first bite to the last.

The Key to a Really Good Shrimp Po’ Boy

A great shrimp po’ boy depends on balance: crunchy shrimp, soft bread, fresh toppings, and a bold sauce. What makes this recipe work:

• Crispy shrimp that stay light. A buttermilk marinade tenderizes the shrimp while a seasoned cornmeal-and-flour coating fries up golden and crisp without feeling heavy.
• Bold, creamy remoulade. The homemade remoulade adds tang, richness, and enough heat to tie the sandwich together.
• Soft toasted bread. Buttered and lightly toasted rolls provide structure while preserving the classic soft po’ boy texture.
• Balanced crunch and freshness. Shredded lettuce and tomato offset the rich fried shrimp and creamy sauce so the sandwich never feels too heavy.
• Simple to make at home. A few straightforward techniques deliver restaurant-quality results without complexity.

Why a Shrimp Po’ Boy?

The shrimp po’ boy is a Louisiana classic: crispy fried shrimp served on soft French-style bread, dressed with lettuce, tomato, and mayonnaise or remoulade. The name “po’ boy” is thought to have originated in New Orleans, referring to hearty sandwiches served to striking streetcar workers in the late 1920s. This version honors those classic flavors while using a flavorful buttermilk soak and a homemade remoulade to enhance the shrimp.

NOTE: The full, measured ingredient list is included in the recipe card below.

• Shrimp: Large or extra-large shrimp work best — they stay juicy and give the sandwich the hearty texture you want. Pat shrimp dry before marinating so the buttermilk coats evenly.
• Buttermilk: Tenderizes shrimp and helps the coating cling, producing a lighter crust.
• Cornmeal: Adds a classic, light crunch.
• Cornstarch and flour: Keep the coating crisp and delicate rather than heavy.
• Seasonings: Old Bay, Cajun and Creole seasoning, paprika, salt, and pepper provide the signature flavor profile.
• Mayo, ketchup, mustard, Worcestershire, horseradish, and lemon: Combine into a creamy, tangy remoulade that complements the fried shrimp.
• Oil: Use a neutral, high-smoke-point oil such as canola, peanut, or vegetable for frying.
• Rolls: Soft French or po’ boy rolls are ideal; they compress around the filling without being tough. Leidenheimer-style rolls are traditional if you can find them.
• Lettuce and tomato: Shredded iceberg and ripe tomato slices lend cool freshness and balance the rich fried shrimp and sauce.

Why Buttermilk Makes Better Fried Shrimp

Buttermilk does more than add flavor: it tenderizes the shrimp and gives the seasoned coating something to cling to, which results in a lighter, crispier crust when fried. Because shrimp cook quickly, the buttermilk also helps keep them juicy and prevents them from turning rubbery. Combined with Cajun seasoning, hot sauce, and Old Bay, it builds flavor even before the shrimp hit the oil, producing a result that’s crisp outside and well seasoned inside.

1. Make the buttermilk mixture: Whisk together buttermilk, hot sauce, Old Bay, Creole seasoning, Cajun seasoning, paprika, and salt in a medium bowl.
2. Soak the shrimp: Add the shrimp, toss to coat, cover, and refrigerate for at least 30 minutes or up to 2 hours.
3. Make the remoulade: Whisk mayonnaise, ketchup, whole-grain Dijon, Worcestershire, horseradish, lemon juice, Cajun seasoning, and paprika until smooth. Adjust salt or lemon to taste, then chill at least 30 minutes (flavor improves if it rests longer).
4. Set up the dredge: In a wide, shallow bowl combine flour, cornmeal, cornstarch, Old Bay, paprika, and salt.
5. Heat the oil: Pour 2–3 inches of oil into a heavy Dutch oven or deep skillet and heat to 350°F. Set a wire rack over a rimmed baking sheet for draining.
6. Dredge and fry the shrimp: Working in batches, lift each shrimp from the buttermilk, let excess drip off, press into the flour mixture so the coating sticks, then lower into hot oil. Fry, turning once, until deeply golden and crisp, about 2 minutes total. Transfer to the wire rack and sprinkle with a pinch more Old Bay while hot. Let the oil return to temperature between batches.
7. Toast the rolls: Split rolls lengthwise without cutting through, spread cut sides with softened butter, and toast in a 400°F oven or under a broiler until edges are golden, about 3 minutes.
8. Assemble: Spread remoulade on both sides of each toasted roll. Pile the bottom half with shredded lettuce and tomato slices, top with fried shrimp, close the sandwich, press gently, and serve immediately with lemon wedges and extra remoulade.

Expert Recipe Tips

• Keep the oil at 350°F. Too-cool oil causes the coating to absorb oil and become greasy. Fry in batches and let the oil return to temperature between rounds.
• Don’t overcrowd the pan. Too many shrimp at once drops the oil temperature and prevents an even, golden crust.
• Pat shrimp dry before marinating. Excess moisture prevents the coating from sticking properly.
• Use soft bread, not a crusty baguette. A po’ boy should be easy to bite into; overly crusty bread won’t provide the right texture.
• Assemble right before serving. Build sandwiches just before eating so the shrimp remain crisp and the bread stays fresh.