Cajun-Spiced Crab Boil with Garlic Butter Sauce

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

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A vibrant seafood boil featuring succulent crab clusters tossed in a fragrant garlic butter and Cajun seasoning blend. This American-inspired seafood recipe, ready in about 45 minutes, pairs live crab clusters, water, salt for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 550 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 15 min Cook: 30 min Serves 4 American cuisine 550 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a large stockpot, bring 6 cups of water to a boil with 2 tbsp salt and 2 bay leaves over high heat until fragrant, about 5 minutes.
  2. Step 2: Add 1 lb small red potatoes and boil for 10 minutes until they begin to soften.
  3. Step 3: Add 8 oz sliced andouille sausage and 2 ears of corn cut in half; cook for 5 minutes.
  4. Step 4: Add 2 lbs live crab clusters and 2 tbsp Cajun seasoning; cook for an additional 8-10 minutes until crab shells turn bright red and meat is cooked through.
  5. Step 5: Meanwhile, melt 6 tbsp unsalted butter in a small skillet over medium heat. Add 5 minced garlic cloves and sauté for 2-3 minutes until fragrant and golden, then remove from heat.
  6. Step 6: Drain the crab boil mixture and transfer to a large serving platter. Drizzle the garlic butter over the seafood, potatoes, and corn, then sprinkle 2 tbsp chopped fresh parsley on top.
  7. Step 7: Serve immediately with lemon wedges for squeezing over the dish.

Frequently asked questions

How long does Cajun-Spiced Crab Boil with Garlic Butter Sauce take to make?

Total time is about 45 minutes (15 min prep + 30 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Cajun-Spiced Crab Boil with Garlic Butter Sauce?

Refrigerate in a covered airtight container for up to 3–4 days (FDA FoodKeeper guideline for cooked fish). Store any fresh salsa or citrus-based garnish in a separate container — it keeps for up to 2 days. Freeze cooked fish (without fresh garnishes) for up to 3 months; thaw overnight in the fridge and reheat gently at 275°F until just warmed through to preserve texture.

Can I substitute ingredients in Cajun-Spiced Crab Boil with Garlic Butter Sauce?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Cajun-Spiced Crab Boil with Garlic Butter Sauce for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Cajun-Spiced Crab Boil with Garlic Butter Sauce?

American seafood like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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