Crispy Shrimp Po' Boy

A crunchy, golden fried shrimp sandwich dressed with a tangy Cajun mayo for a Southern-inspired snack. Crisp breading and a bright, spicy sauce make this an easy showstopper for weeknight dinners, parties, or casual weekend lunches.

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40mTotal
MediumDifficulty
Jake Woods

Jake Woods's note

"This po' boy balances a super-crisp shrimp coating with a creamy, zesty Cajun mayo—perfect for casual entertaining or a comforting solo treat. Home cooks will appreciate the straightforward dredge-and-fry method that yields reliably crunchy results."

About This Recipe

This Crispy Shrimp Po' Boy takes the elements that make the New Orleans sandwich irresistible—hot, crunchy fried shrimp, a bright tang from lemon and pickles, and a bold, spiced mayo—and pares them down to a home cook’s fast, reliable method. The combination of all-purpose flour and fine cornmeal gives the crust a shatteringly crisp texture that still clings to each shrimp, while a quick buttermilk soak tenderizes the meat and helps the dredge adhere. The Cajun mayo, split between the coating and the sauce, layers heat and seasoning so every bite reads as a unified, slightly smoky, lemon-bright experience. This version is ideal for weeknight dinners that feel special, backyard gatherings where you want to feed a crowd quickly, or an easy indulgent lunch when you’re craving something playful and hands-on.

What makes this recipe work is attention to a few small technical details: keep the oil at a steady 350°F, fry in small batches so the temperature doesn’t plummet, and keep finished shrimp on a wire rack to remain crisp. Use soft French rolls lightly toasted so they don’t soak through but still compress for the classic Po' Boy mouthfeel. If you want to scale up, the dredging and frying steps are perfectly batch-friendly, and the mayo can be made a day ahead so the flavors have time to marry.

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Yield
4

Ingredients for Crispy Shrimp Po' Boy

  • 1 lb Large raw shrimp, peeled and deveined
  • 1 cup Buttermilk
  • 1 cup All-purpose flour
  • 1/2 cup Fine cornmeal
  • 2 tbsp Cajun seasoning (divided)
  • 1 large Large egg
  • 4 cups Vegetable oil (for frying)
  • 1/2 cup Mayonnaise
  • 1 tbsp Fresh lemon juice (about 1 lemon)
  • 4 count French rolls or small baguettes

How to Make Crispy Shrimp Po' Boy

  1. Step 1: Make the Cajun mayo

    Whisk together mayonnaise, 1 tablespoon of the Cajun seasoning, and the lemon juice until smooth. Taste and adjust—add a pinch more Cajun seasoning if you want extra heat—then refrigerate while you prepare the shrimp so flavors meld.

    For this step

    • 1/2 cupMayonnaise
    • 1 tbspFresh lemon juice (about 1 lemon)
    Make the Cajun mayo
  2. Step 2: Marinate the shrimp

    Place the peeled, deveined shrimp in a bowl and pour the buttermilk over them, tossing to coat. Let sit 15–20 minutes refrigerated to tenderize and help the coating adhere; drain briefly before dredging.

    For this step

    • 1 lbLarge raw shrimp, peeled and deveined
    • 1 cupButtermilk
    Marinate the shrimp
  3. Step 3: Prepare the dredge and egg wash

    In a shallow bowl combine the flour, cornmeal and the remaining 1 tablespoon Cajun seasoning. In a separate bowl beat the egg. Working in batches, dip shrimp in the beaten egg, then dredge in the flour/cornmeal mixture, pressing to adhere a complete, even coating.

    For this step

    • 1 cupAll-purpose flour
    • 1/2 cupFine cornmeal
    • 1 largeLarge egg
    Prepare the dredge and egg wash
  4. Step 4: Fry the shrimp

    Heat oil in a heavy skillet or Dutch oven to 350°F (175°C). Fry shrimp in small batches 2–3 minutes until golden brown and cooked through, turning once. Transfer to a wire rack or paper towel-lined plate to drain and keep warm while you finish.

    For this step

    • 4 cupsVegetable oil (for frying)
    Fry the shrimp
  5. Step 5: Assemble the po' boys

    Split and toast the rolls lightly, spread each with a generous smear of the Cajun mayo, and pile on the hot crispy shrimp. Serve immediately while shrimp are crisp—optionally squeeze extra lemon over sandwiches before serving.

    For this step

    • 4 countFrench rolls or small baguettes
    Assemble the po' boys
  1. Whisk together mayonnaise, 1 tablespoon of the Cajun seasoning, and the lemon juice until smooth. Taste and adjust—add a pinch more Cajun seasoning if you want extra heat—then refrigerate while you prepare the shrimp so flavors meld.
  2. Place the peeled, deveined shrimp in a bowl and pour the buttermilk over them, tossing to coat. Let sit 15–20 minutes refrigerated to tenderize and help the coating adhere; drain briefly before dredging.
  3. In a shallow bowl combine the flour, cornmeal and the remaining 1 tablespoon Cajun seasoning. In a separate bowl beat the egg. Working in batches, dip shrimp in the beaten egg, then dredge in the flour/cornmeal mixture, pressing to adhere a complete, even coating.
  4. Heat oil in a heavy skillet or Dutch oven to 350°F (175°C). Fry shrimp in small batches 2–3 minutes until golden brown and cooked through, turning once. Transfer to a wire rack or paper towel-lined plate to drain and keep warm while you finish.
  5. Split and toast the rolls lightly, spread each with a generous smear of the Cajun mayo, and pile on the hot crispy shrimp. Serve immediately while shrimp are crisp—optionally squeeze extra lemon over sandwiches before serving.

Crispy Shrimp Po' Boy Tips

Keep oil temperature steady

Use a thermometer and fry in small batches so the oil returns to 350°F quickly; overcrowding cools the oil and makes the coating soggy.

Dry shrimp before dredging

Pat shrimp dry after draining the buttermilk so the flour/cornmeal mixture adheres evenly and forms a thin, crunchy crust.

Press coating to adhere

After dipping in egg, press the flour-cornmeal mix onto each shrimp with your fingers to prevent bare spots and ensure uniform frying.

Use a wire rack to drain

Transfer fried shrimp to a wire rack over a tray instead of paper towels to keep air circulating and preserve crispness.

Toast rolls lightly

Briefly toast split rolls cut-side down to build a moisture barrier so the mayo and shrimp don’t make the bread soggy.

Crispy Shrimp Po' Boy Variations and Substitutions

Panko-Cornmeal Mix

Swap half the all-purpose flour for panko breadcrumbs for an extra airy, flaky crunch while retaining cornmeal for grit.

Air-Fryer Option

Toss dredged shrimp in a thin spray of oil and air-fry at 400°F for 6–8 minutes, flipping once, for a lighter crisp without deep frying.

Gluten-Free Substitute

Use a 1:1 gluten-free flour blend plus the fine cornmeal (or replace cornmeal with extra almond flour) to keep texture while avoiding gluten.

Cajun-Less Version

If you prefer milder flavors, halve the Cajun seasoning in the dredge and add smoked paprika and a pinch of cayenne to the mayo for aroma without intense heat.

How to Store and Make Crispy Shrimp Po' Boy Ahead

Leftover fried shrimp are best eaten the same day; refrigerate any unused shrimp and rolls separately in airtight containers for up to 24 hours. Reheat shrimp in a single layer at 375°F in the oven or toaster oven for 5–7 minutes to restore crispness—avoid the microwave. The Cajun mayo will keep 3–4 days refrigerated, so assemble sandwiches just before serving to prevent soggy bread.

What to Serve With Crispy Shrimp Po' Boy

Serve these Po' Boys with dill pickles or quick refrigerator slaw to add crunch and a vinegar lift that cuts the richness. Classic Southern sides like kettle-cooked potato chips, seasoned fries, or a simple coleslaw work well, and a crisp lager or a lemony iced tea pairs perfectly. For a party, offer lemon wedges and extra hot sauce so guests can customize their heat level.

Crispy Shrimp Po' Boy FAQs

Can I prep the shrimp ahead of time?

You can soak the shrimp in buttermilk up to 2 hours ahead to save time, but dredge and fry them just before serving for the best texture.

How do I know when shrimp are done frying?

Shrimp cook quickly—2–3 minutes per batch—when they turn golden and the tails curl into a loose 'C' shape; overcooking makes them rubbery, so watch closely.

My coating falls off during frying—what went wrong?

Likely causes are wet shrimp, oil that’s too hot, or not pressing the dredge firmly; pat shrimp dry after buttermilk, press the coating on, and maintain a steady 350°F oil temperature.

Can I use frozen shrimp?

Yes—thaw completely, drain and pat very dry before marinating in buttermilk and dredging; excess moisture from partially frozen shrimp makes the coating slip off.

How spicy is the Cajun mayo and can I adjust it?

The recipe gives a medium kick from the Cajun seasoning, but you can tone it down by reducing the seasoning in the mayo or add heat with cayenne or hot sauce to increase it.

Jake Woods

About the author

Jake Woods

Hello, I'm Jake. I started this recipe site with the idea that I hated recipe websites that overwhelm you with long stories and ads just to see plain content that's not helpful. My goal is to provide you with quality recipes, simple ideas and a fun cooking experience. There's lots of fun things to cook, and I think as you browse the site you'll find that TopShelf.Recipes is the place for quality recipes on the web.

See all recipes by Jake Woods →

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Nutrition Facts

Per serving: about 1¾ cups

Calories2794
Total Fat259g
Saturated Fat37.3g
Trans Fat0g
Polyunsaturated Fat65g
Monounsaturated Fat143.8g
Cholesterol243mg
Sodium1517mg
Total Carbohydrates101.2g
Dietary Fiber5.7g
Total Sugars3g
Includes Added Sugars0g
Protein39g
Vitamin D0.3μg
Calcium241mg
Iron7.5mg
Potassium645mg

Nutrition values are estimated from USDA ingredient data and may vary based on preparation, brands, and portion sizes. Values are provided for informational purposes only.

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Crispy Shrimp Po' Boy

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