Seafood Boil Sauce Recipe

If there's one sauce that'll make your Seafood Boil Sauce Recipe legendary, this is it. Picture slipping your fingers through succulent crawfish legs or buttery shrimp, then dunking them into a pool of garlic-rich, Cajun-spiced bliss. That's what this recipe delivers 🎉.

As a chef raised on Boston’s vibrant seafood scene, I grew up knowing a great seafood butter sauce recipe can transform the entire experience. This seafood boil sauce recipe easy comes together in just 20 minutes, blending melted butter with finely diced onions, garlic, homemade Cajun seasoning, Old Bay, brown sugar, and chicken stock. A squeeze of lemon at the end brightens everything up, making it irresistible.

And if you're wondering how to make seafood boil sauce thick and velvety? The simmering with chicken stock helps emulsify the butter and aromatics—creating a sauce that clings gloriously to your crustaceans.

You can pair it with my seafood boil recipe or try a cajun seafood boil sauce recipe twist by adding extra red pepper flakes or a dash of hot sauce for warmth. And if your boil is looking a bit dry, don’t forget that extra half-cup of stock trick; it gives you a silky consistency without diluting flavor.

You’ll feel totally jacked up on flavor—because quality ingredients matter. That’s why I’m all about ditching processed mixes and embracing whole spices.

As you stir in the Cajun seasoning, Old Bay, onion powder, red pepper flakes, and brown sugar, you’ll notice the pan fill with a caramelized, spicy aroma. That lovely balance of sweet and heat is the secret behind the seafood boil butter sauce recipe.

In just a few minutes, you’ve made a sauce that takes any boil to a new level. This seafood boil sauce recipe is simple, sensational, and addictive. Serve it dripping over crab legs, or lobster tails—or just use it as your go-to dip. Your taste buds (and your guests) will thank you.

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Seafood Boil Sauce Recipe

By Leo Martini

Published: July 20, 2025

4.7/5 (68 ratings)

A rich garlic‑butter Cajun sauce perfect for drizzling over seafood boils or using as a dipping delight.

Prep Time: 5m Cook Time: 20m Total Time: 25m Yield: 2.5 cups Category: Sauce Cuisine: American, Cajun

Ingredients

½x 1x 2x

• 2 cups salted butter
• 1 onion, finely diced
• 8 cloves garlic, finely diced
• ¼ cup Cajun seasoning
• 2 tablespoon Old Bay seasoning
• 1 tablespoon onion powder
• 1.5 tablespoon brown sugar
• 1 tablespoon red pepper flakes
• 1 cup chicken stock
• 2 tablespoon lemon juice
• 2 tablespoon fresh parsley, chopped

Instructions

1. Step 1: Melt butter and cook onions for 5 minutes.
2. Step 2: Add garlic and cook for 3 minutes.
3. Step 3: Stir in spices and brown sugar; cook 5 minutes.
4. Step 4: Add stock; bring to boil and simmer 6–8 minutes.
5. Step 5: Finish with lemon juice and parsley; serve with seafood.

Nutrition Facts (per serving)

Calories: 550 calories

Fat: 60g

Saturated Fat: 35g

Cholesterol: 150mg

Sodium: 800mg

Carbohydrates: 10g

Fiber: 1g

Sugar: 4g

Protein: 2g

Keywords: Seafood Boil Sauce Recipe, seafood boil recipe, seafood boil sauce recipe easy, cajun seafood boil sauce recipe, seafood boil butter sauce recipe, how to make seafood boil sauce thick

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FAQs

What is seafood boil sauce made of?

It’s made of butter, onions, garlic, Cajun seasoning, Old Bay, onion powder, brown sugar, red pepper flakes, chicken stock, lemon juice, and parsley.

How to make seafood sauce at home?

Sauté onions and garlic in butter, stir in spices and brown sugar, add chicken stock, simmer until thickened, then finish with lemon juice and parsley.

What ingredients to use for a seafood boil?

A traditional boil uses shellfish (shrimp, crab, crawfish), corn on the cob, potatoes, garlic, onion, Cajun or Old Bay seasoning, and sausage—served with this dipping sauce.

What is a Cajun seafood boil made of?

A Cajun seafood boil typically includes shrimp or crawfish, corn, potatoes, sausages, and a mix of Cajun spices, bay leaves, garlic, and often hot sauce or cayenne, boiled together.