Crockpot Cajun Butter Shrimp with Bell Peppers

This Crockpot Cajun butter shrimp is the ultimate set-it-and-forget-it dinner. Tender jumbo shrimp, sweet bell peppers, and onions simmer in a rich, spicy butter sauce that comes together in minutes.

Just dump everything into the slow cooker, walk away, and come back to a bubbling, fragrant meal that tastes like a Louisiana seafood boil without the fuss. Serve it over rice with lemon wedges for a complete, satisfying dinner.

This recipe turns a handful of simple ingredients into a deeply flavorful meal with almost no effort. The shrimp are gently slow-poached in a buttery Cajun sauce, so they stay plump and tender.

The bell peppers and onions soften and soak up all the spicy, garlicky goodness. It's the kind of dish that feels special enough for a weekend but easy enough for a busy weeknight. All you need is a slow cooker and a few minutes of prep.

Ingredients

Why this recipe works

The slow cooker does all the work here. Cooking the shrimp on low heat in the seasoned butter bath keeps them moist and tender, rather than tough and rubbery.

The low, gentle heat also allows the flavors of the garlic, paprika, and cayenne to meld into the butter and coat every piece of shrimp and every vegetable.

The vegetables—bell peppers, sweet onion, and celery—release their natural juices as they cook, creating a light, flavorful broth that mingles with the butter.

This combination of butter and vegetable juices makes a sauce that is rich but not heavy, perfect for spooning over rice or sopping up with crusty bread.

Notes and substitutions

Use fresh or fully thawed shrimp for the best texture. If using frozen, thaw them completely in the refrigerator before adding to the slow cooker. Peeled and deveined shrimp save time, but you can also use shell-on shrimp if you prefer to peel them at the table.

The spice level comes from cayenne pepper. For a milder dish, reduce it to 1/4 teaspoon or omit it entirely. For more heat, add a pinch more or serve with hot sauce on the side. Smoked paprika adds depth, but regular paprika works in a pinch.

• jumbo shrimp: large shrimp or prawns (adjust cook time if smaller)
• sweet Vidalia onion: yellow onion or shallots
• smoked paprika: regular paprika plus a pinch of liquid smoke
• cayenne pepper: red pepper flakes or hot sauce (adjust to taste)

Equipment

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