Cajun Grilled Crawfish (Louisiana Style) | Arteflame

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Swap the traditional boil for the grill with this fiery Louisiana Cajun Spiced Grilled Crawfish recipe. Learn how to achieve the perfect smoky sear and spicy kick using your flat-top grill for a backyard feast that brings the bayou to your home.
By Michiel Schuitemaker
Updated on
Authentic Louisiana Cajun Spiced Grilled Crawfish Recipe

Introduction

There is nothing quite like the smell of garlic butter hitting hot steel to signal that a feast is about to begin. Growing up, crawfish boils were a staple, but discovering the magic of grilling these mudbugs changed the game entirely. The high heat creates a smoky char on the shells that intensifies the natural sweetness of the meat inside, while the spicy Cajun butter caramelizes into a sticky, finger-licking coating. It is messy, it is loud, and it captures the true spirit of a bayou backyard party.

Why You Will Love This Grilling Method

While boiling is traditional, grilling offers a depth of flavor you just cannot get in a pot. I love this recipe because it turns the meal into an interactive event. Using a flat-top grill allows you to cook everything rapidly without losing those precious juices. Plus, the homemade Cajun rub allows you to control the salt and heat, ensuring the flavor profile is bold but never overpowering.

Chef’s Tips for Perfect Crawfish

  • Watch the heat: Crawfish cook incredibly fast. Keep them moving on the hot surface to prevent the garlic from scorching and the meat from becoming rubbery.
  • Don’t skip the purge: If using live crawfish, thoroughly washing them is non-negotiable to avoid a gritty texture that ruins the experience.

Easy Substitutions

If you cannot find crawfish, this marinade works wonders on jumbo shrimp or even langoustines. For those watching their sodium intake, you can easily reduce the salt in the DIY spice blend without sacrificing that signature peppery kick.

Ingredients

The Main Event

  • 2 to 3 lbs large crawfish (live and purged, or frozen whole crawfish, thawed)
  • 1/2 cup unsalted butter, melted
  • 4 cloves garlic, minced
  • 2 fresh lemons (one juiced, one cut into wedges for serving)
  • 2 tbsp fresh parsley, chopped

Homemade Cajun Seasoning Blend

  • 1 tbsp paprika (smoked or sweet)
  • 1 tbsp sea salt
  • 1 tbsp garlic powder
  • 1 tbsp onion powder
  • 1 tsp cayenne pepper (adjust for heat)
  • 1 tsp dried oregano
  • 1 tsp dried thyme
  • 1/2 tsp freshly cracked black pepper

Instructions

Step 1: Prep and Clean the Crawfish

  1. If using live crawfish, ensure they are thoroughly purged and washed to remove any grit from their systems. Rinse them under cold water until the water runs clear.
  2. If using frozen crawfish, ensure they are completely thawed and patted dry with paper towels to allow the butter and spices to adhere properly.
  3. Inspect the crawfish and discard any that are dead (if using live) or have broken shells.

Step 2: Create the Cajun Marinade

  1. In a small mixing bowl, combine the melted butter, minced garlic, and freshly squeezed lemon juice. Whisk until well incorporated.
  2. In a separate small bowl, mix together the paprika, salt, garlic powder, onion powder, cayenne pepper, oregano, thyme, and black pepper to create your dry Cajun rub.
  3. Place the clean crawfish in a large bowl. Pour the butter mixture over them, tossing gently to coat every shell.
  4. Sprinkle the dry seasoning blend over the buttered crawfish, tossing again to ensure an even, spicy coating on all sides.

Step 3: Fire Up the Grill

  1. Preheat your grill or Arteflame cooktop to medium-high heat. You want the surface hot enough to sear the shells quickly without burning the spices.
  2. Lightly oil the grill surface with a high-smoke point oil like canola or vegetable oil to prevent sticking.
  3. Test the heat by splashing a few drops of water on the cooktop; if it sizzles and evaporates immediately, you are ready to cook.

Step 4: Grill the Crawfish

  1. Place the crawfish in a single layer on the hot grill surface. Do not overcrowd them, as you want them to roast, not steam.
  2. Grill for approximately 3 to 5 minutes, turning them occasionally with tongs. You are looking for the shells to turn a bright, vibrant red and for the spices to darken slightly.
  3. Be careful not to overcook, as crawfish meat can become rubbery if left on the heat too long.

Step 5: Finish and Serve

  1. Once the crawfish are bright red and hot, remove them from the grill immediately and transfer them to a large serving platter.
  2. Drizzle any remaining seasoned butter from the prep bowl over the hot crawfish for extra flavor.
  3. Garnish with chopped fresh parsley and serve immediately with fresh lemon wedges on the side.

Tips

To ensure your grilled crawfish are the highlight of the meal, pay close attention to the source of your seafood. Live crawfish provide the best texture and flavor, but they require diligent purging in salted water to remove mud from their digestive tracts. If you are new to handling live seafood, high-quality frozen whole crawfish are a convenient and safe alternative; just make sure they are fully thawed before hitting the grill to ensure even cooking. Additionally, heat management is crucial. Because crawfish are small, they cook very quickly. Keep them moving on the flat top grill to prevent the garlic and spices from burning and becoming bitter. If you are using an Arteflame, utilize the cooler outer zones of the cooktop to keep the cooked crawfish warm without continuing to cook them aggressively while you finish the rest of the batch.

Variations

While the classic Cajun spice profile is a crowd-pleaser, crawfish are incredibly versatile and can take on various flavor profiles to suit your palate. You can easily adjust the heat level or lean into different cultural influences by swapping out a few ingredients. Here are a few ways to mix up your grilled crawfish game:

  • Creole Style: Add a tablespoon of tomato paste to the butter mixture and incorporate dried basil for a slightly sweeter, herb-forward Creole flavor profile.
  • Garlic Butter & Herb: Omit the cayenne and heavy spices. Focus on doubling the garlic, and add fresh rosemary and thyme for a milder, savory version.
  • Citrus & Chili: Swap the lemon for lime juice and use chili powder and cumin instead of the Cajun blend for a Tex-Mex or Southwestern twist.
  • Beer Steamed Finish: After grilling, splash a little light lager over the crawfish on the flat top right before removing them to infuse a malty, steamed aroma.
  • Old Bay Classic: Replace the Cajun seasoning blend entirely with Old Bay seasoning for a traditional East Coast seafood boil taste.

Best pairings

A pile of spicy grilled crawfish needs sturdy sides and refreshing beverages to balance the heat and richness of the butter. Since you already have the grill fired up, it makes sense to cook your side dishes right alongside the seafood. The goal is to create a complete Southern experience that satisfies all the senses. Consider these perfect companions for your feast:

  • Grilled Corn on the Cob: The natural sweetness of the corn balances the spicy cayenne heat perfectly. Grill it with a little chili lime butter.
  • Andouille Sausage: Slice and sear spicy sausage on the grill to add a meaty, savory element that complements the seafood.
  • Remoulade Sauce: A creamy, tangy dipping sauce is essential for cooling down the palate between spicy bites.
  • Cold Lager or Pilsner: A crisp, ice-cold beer cuts through the richness of the butter and refreshes the tongue after the Cajun spice.

Conclusion

Mastering this Louisiana Cajun Spiced Grilled Crawfish recipe adds a spectacular dish to your culinary repertoire that is sure to impress family and friends. It moves away from the massive stockpots of boiling water and brings the action to the grill, where the fire adds a depth of flavor that is impossible to achieve otherwise. The combination of smoky char, rich butter, and the signature kick of Cajun spices makes this dish a celebration of Southern heritage and outdoor cooking. Whether eaten as a messy, hands-on appetizer or the star of a seafood spread, these crawfish are bound to disappear quickly. So, gather your ingredients, fire up the grill, and let the good times roll!

40" grill

This recipe was prepared on the Arteflame XXL 40" Flat Top Grill - High Euro Base

Experience the difference — sear at 1,000°F, enjoy multiple heat zones, and cook with natural wood-fired flavor on one beautiful grill. Prepare everything at once, manage temperatures with ease, and elevate every outdoor gathering. Discover why an Arteflame transforms the entire grilling experience.

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