Bring the authentic taste of a classic Southern low-country seafood boil straight to your kitchen with this effortless crockpot recipe! Packed with plump, seasoned shrimp, sweet corn on the cob, and tender red potatoes, everything simmers together in a rich, buttery Cajun broth that infuses flavor into every single bite.
⏱️ QUICK METRICS
- Prep Time: 15 minutes
- Cook Time: 3 hours 20 minutes
- Total Time: 3 hours 35 minutes
- Yield: 4 to 6 servings
- Course: Main Dinner / Seafood Special
- Cuisine: American (Southern / Cajun)
🛒 INGREDIENTS
The Seafood & Veggie Base:
- 1.5 lbs Raw large shrimp, peeled and deveined (tails left on for presentation)
- 1 lb Red baby potatoes, washed and left whole
- 3–4 ears Fresh sweet corn on the cob, shucked and sliced into 2-inch rounds
- 1 large Yellow onion, chopped into thick wedges
- 1 link (12–14 oz) Smoked Andouille sausage, sliced into thick coins (Optional, but traditionally recommended for a deep smoky flavor)
The Rich Cajun Butter Broth:
- ½ cup (1 stick) Unsalted butter, melted
- 2 cups Chicken broth (or vegetable broth)
- 3 tbsp Old El Paso or McCormick Cajun seasoning mix (or Old Bay seasoning)
- 3 cloves Fresh garlic, finely minced
- 1 whole Fresh lemon, halved (half squeezed into broth, half sliced into wheels for cooking)
- 1 tbsp Fresh parsley, finely chopped (for final garnish)
🍳 STEP-BY-STEP INSTRUCTIONS
Step 1: Prep and Layer the Potatoes
Grease the interior of a large slow cooker insert with non-stick cooking spray. Place the washed, whole red baby potatoes and the thick yellow onion wedges right at the bottom of the pot, as they take the longest to cook.
Step 2: Add the Corn and Sausage
Layer the sliced sweet corn rounds and the thick smoked sausage coins evenly over the bed of potatoes.
Step 3: Whisk and Pour the Cajun Broth
In a small bowl or glass measuring cup, whisk together the melted butter, chicken broth, minced garlic, Cajun seasoning blend, and a squeeze of fresh lemon juice. Pour this rich, savory spiced broth directly over the ingredients in the slow cooker. Toss the remaining lemon wheels right into the pot.
Step 4: Slow Cook the Base
Cover the slow cooker with the lid and cook on HIGH for 3 hours (or on LOW for 5 to 6 hours) until the baby potatoes are completely fork-tender.
Step 5: The Flash Shrimp Cook
Once the potatoes are perfectly soft, open the lid and spread the raw large shrimp evenly across the top of the hot ingredients. Gently push them down into the bubbling butter broth. Cover with the lid and cook on HIGH for an additional 15 to 20 minutes just until the shrimp turn pink, opaque, and plump. Do not overcook the shrimp, or they will become rubbery!
Step 6: Serve and Garnish
Turn off the slow cooker and give everything a very gentle stir to coat the seafood and veggies in the rich garlic-butter pools sitting at the bottom of the liner. Dust the entire top with freshly chopped green parsley. Serve directly from the pot or dump onto a paper-lined table platter for a festive feel!
💡 PRO CHEF TIPS
- Perfect Shrimp Timing: Always add the shrimp during the last 15-20 minutes of cooking. Shrimp cooks incredibly fast, and adding it too early will ruin its juicy, snappy texture.
- Spice Adjustment: If you prefer a milder boil, drop the Cajun seasoning down to 1.5 or 2 tablespoons. For a fiery kick, add a few splashes of Louisiana hot sauce into the broth mix before cooking.
🥡 STORAGE & REHEATING
- To Store: Keep leftovers in a well-sealed container in the refrigerator for up to 2 days.
- To Reheat: For the best results, reheat the dish in a skillet over medium-low heat on the stovetop with a splash of water or extra butter to keep the shrimp moist. Avoid high-power microwaving, as it can cause the seafood to turn rubbery.