Dinner · Part 2 of 3: Instructions
Bayou Butter Cajun Boil Jumbo Shrimp: One-Pot Crockpot Feast Step-by-step instructions

- Prep
- Cook
- Total
- Serves
- 4
Before you start
Before you begin, make sure you have a 6-quart slow cooker and all the ingredients measured. Peel and devein the shrimp if needed, and pat them dry with paper towels. Halve the corn cobs and scrub the potatoes.
Mince the garlic and squeeze the lemon juice. Melt the butter in a small saucepan or microwave-safe bowl. Have your serving platter and rice ready to go when the cooking time is up. This recipe comes together quickly, so a little prep goes a long way.
Ingredients at a glance (12)
- 2 lb raw jumbo shrimp, peeled and deveined
- 4 ears sweet corn, halved
- 1 lb baby red potatoes
- 1 cup unsalted butter, melted
- 2 tbsp Cajun seasoning
- 4 cloves garlic, minced
- 1 tsp smoked paprika
- 2 tbsp fresh lemon juice
- 1/2 tsp salt
- 1/4 tsp black pepper
- 2 cups cooked white rice, for serving
- Lemon wedges, for serving
Instructions
Build the Base
- Layer the Seafood and VegetablesPlace the raw shrimp in the bottom of a 6-quart slow cooker in an even layer. Arrange the halved corn cobs and baby red potatoes around and on top of the shrimp, tucking them into the crevices so everything fits snugly.Look for The slow cooker should be about half full with shrimp, corn, and potatoes distributed evenly.Tip Keep the shrimp in a single layer on the bottom to ensure even cooking.
- Make the Cajun Butter SauceIn a small bowl, whisk together the melted butter, Cajun seasoning, minced garlic, smoked paprika, lemon juice, salt, and black pepper until well combined.Look for The sauce should be a smooth, deep crimson liquid with the spices fully incorporated.Tip Use fresh lemon juice for the brightest flavor.
- Pour the Sauce Over EverythingPour the Cajun butter sauce evenly over the shrimp, corn, and potatoes, making sure to coat as much of the surface as possible. Use a spatula to gently toss if needed, but avoid breaking the shrimp.Look for The sauce should pool around the ingredients, and the shrimp should be lightly coated.Tip If the sauce doesn't cover everything, turn the slow cooker on low and stir after 30 minutes.
At this stage, the slow cooker contains a colorful medley of raw shrimp, corn, and potatoes, coated in a glossy crimson butter sauce. The aromatics of garlic and paprika are already fragrant.
Ensure the shrimp are nestled at the bottom and the vegetables are evenly distributed. The sauce should coat everything lightly, with a little pooling at the bottom. This is your canvas—it will transform into a bubbling feast in a few hours.
Slow Simmer
- Slow Cook on LowCover the slow cooker and cook on low for 2 to 2 1/2 hours, until the potatoes are fork-tender and the shrimp are opaque and cooked through. Avoid opening the lid during the first hour to maintain heat.Look for The sauce will be bubbling gently around the edges, and the aroma of garlic and Cajun spice will fill the kitchen.Safe temperature 145°F (63°C) internal temperature (shellfish)Tip Cooking on low prevents the shrimp from becoming tough.
- Check for DonenessAfter 2 hours, check the shrimp for doneness: they should be pink, opaque, and curl into a loose 'C' shape. The potatoes should be easily pierced with a fork. If the shrimp are not done, continue cooking in 15-minute increments.Look for The shrimp are cooked when they reach an internal temperature of 145°F (63°C) and are firm to the touch.Safe temperature 145°F (63°C) internal temperature (shellfish)Tip Use an instant-read thermometer for accuracy.
After two hours on low, the slow cooker is alive with gentle bubbles and a rich, spicy-sweet aroma. The sauce has deepened in color, and the shrimp are turning pink and opaque. The corn is bright yellow and tender, while the potatoes are soft when pierced. The kitchen smells like a Cajun kitchen. Check the shrimp for doneness and the potatoes for tenderness—if they need more time, cover and cook in 15-minute bursts.
Serve the Feast
- Scoop and ServeUsing a slotted spoon, transfer the shrimp, corn, and potatoes to a serving platter or individual plates. Spoon some of the remaining butter sauce over the top. Serve immediately with cooked white rice and lemon wedges on the side.Look for The shrimp and vegetables should be glistening with the rich, red butter sauce.Tip For a dramatic presentation, serve the boil directly from the slow cooker.
The finished dish is a vibrant, steaming pile of shrimp, corn, and potatoes bathed in a buttery, crimson sauce. The shrimp are plump and juicy, the corn is sweet and slightly charred-looking from the sauce, and the potatoes are creamy inside. The sauce clings to everything, with a hint of lemon brightness. Serve it immediately over rice, with lemon wedges on the side for squeezing.
Common mistakes
One common mistake is overcooking the shrimp, which turns them rubbery. Stick to the recommended time and check early. Another pitfall is adding too much liquid—the butter sauce is enough, and extra broth will dilute the flavor.
Don't lift the lid during the first hour of cooking, as this releases heat and extends cooking time. Finally, avoid stirring too vigorously when combining the ingredients, as this can break the shrimp.
How to tell it’s done
The shrimp are done when they are pink, opaque, and firm to the touch, with an internal temperature of 145°F (63°C). The corn should be tender and easily pierced with a fork, and the potatoes should offer no resistance when pierced.
The sauce will have thickened slightly and will be bubbling gently. If the shrimp are overcooked, they will become tough and rubbery, so check them at the 2-hour mark and adjust accordingly.
- Shellfish: 145°F (63°C) in the thickest part
Up next · Part 3 of 3
4 variations · storage & make-ahead · 5 answers · printable card
Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)