Slow Cooker Chili Lime Butter Seafood Boil

This slow cooker seafood boil brings together sweet snow crab, plump shrimp, golden corn, and roasted garlic in a luscious chili lime butter sauce.

It's the ultimate hands-off dinner—just layer everything in the crockpot, pour over the butter, and let the slow cooker work its magic. After a few hours, you'll have a bubbling, fragrant feast that tastes like a coastal boil without the fuss.

Imagine coming home to the aroma of garlic and chili lime butter wafting through the kitchen, with a slow cooker full of tender crab and shrimp waiting for you. That's the promise of this recipe. It's designed for busy days when you want something special without spending hours at the stove.

The ingredients are simple, the method is foolproof, and the result is a dish that feels like a celebration. Serve it over steamed rice with lemon wedges, and you have a complete meal that's sure to impress.

Ingredients

Why this recipe works

The slow cooker creates a gentle, moist heat that keeps seafood tender and juicy. Unlike boiling or high-heat cooking, the low simmer prevents the shrimp from becoming rubbery and allows the crab to heat through without drying out. The butter and seasonings meld together into a glossy sauce that coats every piece, infusing the seafood with flavor from the inside out.

Layering the ingredients in the order the video shows—seafood first, then corn and garlic—ensures even cooking and maximum flavor absorption.

The corn and garlic sit on top, soaking up the butter as it melts and mingles with the seafood juices. The result is a harmonious blend of sweet, savory, and zesty notes that taste like they've been simmering for hours, because they have.

Notes and substitutions

Snow crab clusters are the star here, but you can use any crab you like. Look for frozen clusters that are already cleaned and ready to cook.

Raw jumbo shrimp should be peeled and deveined for the best eating experience—you can leave the tails on for presentation if you prefer. The corn kernels are frozen for convenience, but fresh corn cut from the cob works beautifully when in season.

Chili lime seasoning is a blend of chili powder, lime zest, and salt. If you don't have it, make your own by combining chili powder, lime zest, and a pinch of salt. For the butter, unsalted is best so you can control the salt level. If you only have salted butter, reduce or skip any additional salt. Fresh cilantro is essential for that bright finish—don't skip it!

• snow crab clusters: king crab legs or Dungeness crab clusters
• raw jumbo shrimp: large shrimp or prawns, adjust cooking time if smaller
• frozen sweet corn kernels: fresh corn kernels cut from the cob
• chili lime seasoning: 1 tbsp chili powder plus 1 tsp lime zest and 1/2 tsp salt

Equipment

• 6-quart slow cooker
• Mixing bowl
• Slotted spoon
• Cutting board
• Chef's knife
• Measuring cups and spoons