Slow-Cooker Cajun Shrimp and Andouille Boil

This slow cooker shrimp boil delivers all the bold, smoky flavors of a traditional seafood boil with almost no effort.

Jumbo shrimp, andouille sausage, and baby potatoes simmer in a spiced Cajun butter sauce until tender and bathed in rich, garlicky goodness. Set it in the morning, walk away, and come back to a bubbling dinner that tastes like a Louisiana backyard feast.

Forget the big pot of boiling water and the complicated spice bag. This slow cooker version layers raw shrimp, smoky andouille, and baby potatoes in the crock, then pours over a simple butter sauce punched up with garlic, smoked paprika, and cayenne.

The slow cooker does all the work, gently poaching the shrimp and infusing every bite with flavor. Serve it over rice for a complete, satisfying meal.

Ingredients

Why this recipe works

The slow cooker creates a gentle, even heat that poaches the shrimp slowly, keeping them plump and tender instead of rubbery.

The butter sauce slowly melts and coats every ingredient, carrying the smoky, spicy flavors deep into the potatoes and sausage. Because everything cooks together in one pot, the shrimp absorb the seasonings while the potatoes soak up the buttery sauce.

This recipe is built for convenience: there is no stirring, no watching, and no constant checking. The ingredients are simply layered, the sauce poured over, and the slow cooker does the rest.

The result is a dish that tastes like it simmered all day, but the shrimp stay perfectly cooked because they are only in the heat for a short time.

Notes and substitutions

Use jumbo shrimp (21–25 per pound) for the best texture; smaller shrimp may overcook. Peeled and deveined shrimp are ideal, but if using shell-on, remove the shells after cooking. Smoked andouille sausage is a must for its deep, smoky flavor—cured chorizo or kielbasa can substitute in a pinch.

Baby potatoes hold their shape during the long cook and absorb the sauce beautifully. If using larger potatoes, cut them into 1-inch chunks. The heat level is moderate; adjust the cayenne to taste. For a milder version, reduce to 1/4 teaspoon or omit. The butter sauce is the heart of the dish, so use good-quality unsalted butter.

• smoked andouille sausage: smoked kielbasa or chorizo (cured) for a different smoky flavor
• baby potatoes: red potatoes cut into 1-inch chunks; adjust cooking time if smaller
• unsalted butter: salted butter, but reduce added salt to 1/2 tsp
• cayenne pepper: 1/4 tsp red pepper flakes for milder heat

Equipment

• 6-quart slow cooker
• small saucepan
• mixing bowl
• slotted spoon
• measuring cups and spoons