Description

This rich and flavorful Seafood Boil Sauce is the perfect buttery blend of Cajun and Old Bay spices, garlic, and herbs. Made for smothering crab, shrimp, corn, and potatoes — it brings that Southern seafood boil magic to your table.

Ingredients

Scale

2 cups salted butter
1 onion, diced
8 cloves garlic, minced
¼ cup Cajun seasoning
2 tablespoons Old Bay seasoning
1 tablespoon onion powder
1½ tablespoons brown sugar
1 tablespoon red pepper flakes
1 cup chicken stock
2 tablespoons lemon juice

2 tablespoons fresh parsley, chopped

Instructions

Melt Butter: In a large saucepan over medium heat, melt the butter.
Sauté Aromatics: Add diced onion and cook until soft, about 3-4 minutes. Stir in minced garlic and sauté for 1 minute until fragrant.
Add Spices: Stir in Cajun seasoning, Old Bay, onion powder, brown sugar, and red pepper flakes. Cook for 2 minutes, allowing the spices to bloom.
Add Liquids: Pour in the chicken stock and lemon juice. Stir well and simmer for 4–5 minutes to allow the flavors to meld.
Finish with Herbs: Turn off the heat and stir in fresh parsley. Adjust lemon or spice to taste.
Serve: Pour over your seafood boil, or use it as a dipping sauce for shrimp, crab legs, and corn.

Notes

Use unsalted butter if you want more control over saltiness.

Swap chicken stock with seafood broth for a deeper flavor.

For extra heat, add a splash of hot sauce or cayenne.

Keeps well in the fridge for 5 days or freezer for 3 months.

Prep Time: 5 minutes
Cook Time: 10 minutes
Category: Seafood, Southern Cooking, Sauce
Method: Stovetop
Cuisine: American, Cajun

Nutrition

Calories: 120
Sugar: 1g
Sodium: ~150mg
Fat: 12g
Carbohydrates: 2g
Protein: 0g
Cholesterol: 30mg

Keywords: Seafood boil sauce, Cajun butter sauce, garlic seafood sauce, Old Bay seafood sauce, spicy seafood dip, butter sauce for crab, shrimp boil sauce