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When the Instant Pot lid lifts, the steam smells of Old Bay, lemon, and smoky sausage before you’ve even set out the platter. I used to think a shrimp boil needed a huge stockpot and a long afternoon, but this Instant Pot Shrimp Boil builds that same briny, seasoned meal in a 6-quart cooker. The potatoes and sausage get the pressure-cook stage; corn and shrimp wait until afterward. That separation matters, because the shrimp need only a few minutes on Sauté, not the full pressure cycle. You end with a generous platter and a garlicky butter sauce on the side.

I season the cooking liquid with Old Bay and lemon from the start, so the potatoes and sausage aren’t cooked in plain water. Once the pressure is released, the corn goes in for a short simmer, and the shell-on shrimp finish gently in the hot liquid. A little parsley in melted butter gives you a richer sauce to spoon over the platter, while the unused lemon half becomes wedges at the table. It’s casual food with a clear order: smoky sausage, sweet corn, tender potatoes, and shrimp ready to peel as you eat.

Why the Shrimp Goes In After the Potatoes, Not Under Pressure

Pressure cooking is a good match for the potatoes and sausage, but not for shrimp. If everything went into the cooker at once, the shrimp would stay under pressure long after they were cooked and turn firm before the potatoes were tender. This boil uses two cooking stages instead: high pressure for the sturdier ingredients, followed by uncovered Sauté for the corn and seafood.

That order also gives the corn a brief window to become tender-crisp instead of soft. The pot already holds seasoned liquid, so there’s no need to drain it or start over between additions. That liquid carries Old Bay and lemon across the ingredients, and a spoonful over the finished platter keeps the boil tasting connected to the garlic butter served alongside. The timing is doing more than getting dinner cooked; it’s what lets each ingredient keep its own texture.

How Old Bay, Andouille, and Lemon Shape the Cooking Liquid

• Old Bay — It brings the familiar savory, peppery seasoning to the liquid, so a fresh, fragrant tin is worth using. Another seafood seasoning blend can stand in, though its salt and spice balance may differ.
• Lemon — Fresh lemon adds juice to the pot and gives you wedges for serving. Bottled lemon juice can replace the squeezed juice in the liquid, but it won’t give you the fresh wedges or their brighter aroma.
• Baby potatoes — Their small size makes them practical to halve and pressure cook without peeling. Small red potatoes are a useful substitute; halve them so the pieces are similar in size.
• Andouille sausage — This smoked sausage seasons the broth as it cooks and brings more heat than a mild sausage. Smoked kielbasa works in its place for a gentler, less peppery boil; cut it into the same-sized pieces.
• Corn — Fresh ears cut into thirds are easy to lift and serve alongside the shrimp. Choose ears with plump kernels, and cut them before cooking so they’re ready to add as soon as the pressure is released.
• Large shell-on shrimp — Buy them deveined and thawed, as the shells help keep the shrimp intact during cooking and make this feel like a classic boil. Large raw peeled shrimp can also work; add them at the same stage and watch closely for the opaque color and safe internal temperature.
• Butter, garlic, and parsley — Unsalted butter lets the Old Bay seasoning stay in control, while fresh garlic and parsley give the sauce a clean, savory finish. Salted butter can replace unsalted butter, but the sauce will taste saltier.

The Short Sauté Stages That Keep Everything in Its Window

Pressure-Cook the Potatoes and Sausage

Pour the water into a 6-quart Instant Pot, stir in the Old Bay, and squeeze in the juice from one lemon half. Add the halved potatoes and sausage, then lock the lid and cook at high pressure for 3 minutes. Quick-release the pressure before opening the lid. The potatoes get their pressure-cook time here, while the shrimp stay out of the high-heat stage.

Simmer the Corn Until Tender-Crisp

Add the corn after opening the lid, then select Sauté. Simmer for 4 to 5 minutes, keeping an eye on the kernels rather than letting the pot run longer by habit. They should be tender-crisp, not soft and collapsing. If your ears are especially thick, check the corn as it cooks so you can stop when it reaches that texture.

Cook the Shrimp Gently at the End

Add the thawed shrimp and stir gently as they cook on Sauté for 2 to 3 minutes. Look for the flesh to turn opaque, and check that the shrimp reach 145°F. Stirring gently helps move them through the hot liquid without breaking them up. Transfer them out of the pot once they’re cooked so they don’t keep simmering while you finish the platter.

Make the Garlic Butter and Bring It to the Table

While the boil finishes, melt the butter in a small saucepan over low heat. Add the minced garlic and cook for 30 seconds, then stir in the chopped parsley and remove the pan from the heat. Transfer the shrimp, potatoes, sausage, and corn to a serving platter, and spoon over some of the cooking liquid. Serve the butter sauce alongside, with the remaining lemon half cut into wedges.

Two Easy Ways to Adapt the Butter and Seasoning

Questions That Come Up When Making This Shrimp Boil

Instant Pot Shrimp Boil

Instant Pot shrimp boil cooks potatoes, andouille sausage, corn, and shell-on shrimp in seasoned cooking liquid for a quick, tender-crisp seafood meal. Serve it with a buttery garlic parsley sauce and lemon wedges.

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Prep Time 15 minutes mins

Cook Time 11 minutes mins

Total Time 26 minutes mins

Servings: 4 servings

Course: Dinner

Cuisine: American

Calories: 650

Ingredients Equipment Method Notes

Ingredients

  

For the boil

• 1 cup water
• 2 tbsp Old Bay seasoning
• 1 lemon halved
• 1 lb potatoes baby, halved
• 12 oz andouille sausage cut into 1-inch pieces
• 3 corn ears, husked and cut into thirds
• 1.5 lb shrimp large, shell-on, deveined and thawed

For the butter sauce

• 4 tbsp unsalted butter
• 1 cloves garlic minced
• 1 tbsp fresh parsley chopped

Equipment

• 1 6-quart Instant Pot

Method

 

1. Pour the water into a 6-quart Instant Pot.
2. Stir in the Old Bay seasoning.
3. Squeeze in the juice from one lemon half.
4. Add the potatoes and sausage.
5. Lock the lid and cook at high pressure for 3 minutes.
6. Quick-release the pressure.
7. Open the lid and add the corn.
8. Select Sauté and simmer for 4 to 5 minutes, until the corn is tender-crisp.
9. Add the shrimp.
10. Cook on Sauté for 2 to 3 minutes, stirring gently, until the shrimp are opaque and reach 145°F.
11. Melt the butter in a small saucepan over low heat.
12. Add the garlic and cook for 30 seconds.
13. Stir in the parsley and remove from the heat.
14. Transfer the shrimp, potatoes, sausage, and corn to a serving platter.
15. Spoon over some of the cooking liquid.
16. Cut the remaining lemon half into wedges.
17. Serve with the butter sauce and lemon wedges.

Notes

For tender shrimp, add them only after the corn is tender-crisp and stop cooking once they are opaque and reach 145°F. Refrigerate leftovers for up to 2 days; freezing is not recommended. For a dairy-free option, use plant-based butter.