Slow-Cooker Old Bay Butter Shrimp Boil

This slow-cooker shrimp boil delivers all the flavor of a traditional seafood boil with almost no effort. Jumbo shrimp, sweet corn, and baby red potatoes simmer gently in a garlicky Old Bay butter bath until perfectly tender.

Just dump everything into the slow cooker, set it, and forget it. The result is a juicy, aromatic, and satisfying meal that feels like a coastal feast, but comes together on a weeknight. Serve it over rice with lemon wedges for a complete dinner.

A classic seafood boil usually involves a big pot of boiling water, lots of spices, and careful timing. This slow-cooker version simplifies everything: layer the ingredients, pour over garlic butter, and let the machine do the work.

The low, gentle heat poaches the shrimp to plump perfection while the corn and potatoes soak up all the savory butter and seasoning. It's an ideal hands-off recipe for busy days when you want something special without standing over the stove.

Ingredients

Why this recipe works

Cooking the shrimp, corn, and potatoes together in a slow cooker allows the flavors to meld without the need for constant attention.

The butter and Old Bay create a rich, aromatic broth that gently cooks the seafood and vegetables, infusing every bite with savory, spicy notes. The low heat ensures the shrimp stay tender and juicy rather than tough and rubbery, which can happen with high-heat boiling.

The layered arrangement in the slow cooker is deliberate: the shrimp sit on the bottom, where they cook first and absorb the most flavor, while the corn and potatoes on top steam and soften in the butter.

This method also keeps the shrimp intact and prevents them from breaking apart. The result is a cohesive, one-pot dish that's both practical and impressive, perfect for family dinners or casual gatherings.

Notes and substitutions

For the best texture, use jumbo shrimp that are peeled and deveined. You can leave the tails on for presentation, but they're easier to eat if removed. Baby red bliss potatoes are ideal because they hold their shape and cook evenly; if using larger potatoes, cut them into quarters. Sweet corn on the cob adds a pop of color and natural sweetness that balances the spicy Old Bay.

Old Bay seasoning is the star here, so choose a fresh jar for maximum flavor. If you prefer a milder spice, reduce the amount slightly, or add a squeeze of lemon at the end for brightness. Unsalted butter lets you control the salt level, but salted butter works in a pinch. For a dairy-free version, use a plant-based butter substitute.

• unsalted butter: salted butter (reduce added salt elsewhere) or vegan butter
• Old Bay seasoning: Cajun seasoning or a mix of paprika, celery salt, and black pepper
• baby red bliss potatoes: Yukon Gold or fingerling potatoes, halved if large
• jumbo shrimp: large shrimp, adjust cooking time to 2 hours

Equipment

• Slow cooker (6-quart)
• Mixing bowl
• Small whisk
• Slotted serving spoon
• Cutting board
• Chef's knife