Onion Shrimp Sausage Foil

Featured in: Weeknight Dinners

This easy, flavorful dish features plump shrimp and smoked sausage combined with tender potatoes, sweet corn, and pungent onion, all seasoned with classic Cajun spices. The ingredients are wrapped individually in foil packets and baked or grilled until perfectly cooked, sealing in juices and enhancing the smoky, spicy flavors. Garnished with fresh parsley and lemon, this meal is a satisfying blend of textures and bold Southern-inspired tastes.

Updated on Tue, 17 Feb 2026 16:29:00 GMT
Mouthwatering onion boil shrimp and sausage foil packets with tender potatoes, sweet corn, and bold Cajun seasoning, roasted to perfection.  Save
Mouthwatering onion boil shrimp and sausage foil packets with tender potatoes, sweet corn, and bold Cajun seasoning, roasted to perfection. | pulseoven.com

My neighbor showed up at my door one summer evening with a bag of Gulf shrimp and a grin, insisting we cook something adventurous but not fussy. We ended up tossing everything into foil packets without a real plan, just grabbing what looked good from my pantry. Twenty-five minutes later, we were peeling open steaming bundles like presents, the aroma of sausage and Old Bay hitting us all at once. That night taught me that the best meals don't need a complicated recipe, just good ingredients and the willingness to let them cook together.

I made these for a small dinner party on a weeknight, and what struck me most was watching my guests peel open their packets and that moment of pure delight on their faces. The noise alone—the sizzle of the foil, the smell escaping—made everyone lean in closer. It felt like the meal came alive at the table instead of on a plate.

Ingredients

  • Large raw shrimp, 1 lb peeled and deveined: Look for shrimp that still smell like the ocean, not ammonia, and buy them the day you plan to cook if possible.
  • Smoked sausage, 12 oz sliced into half-inch rounds: The smokiness anchors the whole dish, so don't skip it or swap for unsmoked.
  • Large onion cut into wedges: Onion releases its sweetness during steaming and becomes almost caramelized at the edges, mellowing out into something beautiful.
  • Corn, 2 ears each cut into 4 pieces: Fresh corn is ideal, but frozen works fine—just add it straight from the freezer without thawing.
  • Baby potatoes, 1 lb halved or quartered: Their small size means they cook through in the same time as the shrimp, so no need to pre-boil.
  • Garlic, 2 cloves minced: Mince it right before cooking so it doesn't oxidize and turn bitter during the steam.
  • Olive oil, 2 tbsp: This carries the seasonings and keeps everything from drying out inside the foil.
  • Old Bay or Cajun seasoning, 2 tsp: This is the backbone of the flavor profile, so taste as you go if you're adjusting.
  • Smoked paprika, half tsp: It adds a whisper of depth that makes people ask what the secret ingredient is.
  • Black pepper and salt, half tsp each: Start here and taste the shrimp before sealing, since it seasons more as it cooks.
  • Lemon sliced: Fresh lemon brightens everything and the acid keeps the shrimp from tasting flat.
  • Fresh parsley chopped, 2 tbsp optional: A handful scattered on top at the end gives a fresh note and makes it look like you tried harder than you did.

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Instructions

Get your oven or grill ready:
Preheat to 425°F if baking, or set your grill to medium-high heat. If you're grilling, make sure the grates are clean so the foil packets don't stick.
Combine everything in one bowl:
Toss the shrimp, sausage, onion, corn, potatoes, and garlic together like you're getting them acquainted. This is where you can catch any shrimp that feels mushy or potatoes that look iffy.
Season generously and coat evenly:
Drizzle the olive oil first so it acts like a base, then sprinkle all your seasonings on top and toss everything until each piece gets a coating. The smell at this point should make you excited about what's coming.
Prepare your foil packets:
Tear off four sheets of heavy-duty foil about 12 by 16 inches each. Flimsy foil will tear during cooking, and you'll lose all those beautiful juices.
Divide and arrange the mixture:
Place a quarter of the mixture in the center of each foil sheet, then lay lemon slices on top. Leave a couple of inches of foil around the edges so you have room to seal properly.
Fold and seal with intention:
Fold the long sides of the foil over the mixture first, then fold the short ends up and roll them tightly like you're wrapping a present. A loose seal means steam escapes and you lose that concentrated flavor.
Cook until everything is tender:
Place on a baking sheet in the oven or arrange directly on the grill and cook for 20 to 25 minutes until the potatoes are fork-tender and the shrimp are pink and opaque. You'll see the foil puffing up a little, which is exactly what you want.
Open carefully and serve:
Use tongs to move the packets to plates and let your guests open them themselves if you're feeling theatrical. A little parsley on top and lemon wedges on the side, and you're done.
Easy-to-make shrimp and sausage foil packets bursting with juicy seafood, savory sausage, and vibrant vegetables, seasoned with Old Bay spices.  Save
Easy-to-make shrimp and sausage foil packets bursting with juicy seafood, savory sausage, and vibrant vegetables, seasoned with Old Bay spices. | pulseoven.com

The first time I made a mistake was cutting my potatoes too thick, and they stayed crunchy while the shrimp turned rubbery. I learned that day to respect the size of each ingredient and cut them so they finish together. Now I cut potatoes smaller and feel like I've unlocked some kind of cooking secret.

Why This Works as a One-Pan Meal

The foil packet is basically a tiny steam room where everything releases moisture and cooks in its own vapor. The potatoes soften from the heat, the shrimp cook through in minutes, and the sausage flavors everything around it without getting greasy. It's simple chemistry that feels like magic.

Grilling Versus Baking

I've made these both ways, and honestly, grilling gives you a tiny bit of char on the foil where it touches the grates, which adds a subtle smoky layer. But baking is more forgiving if you're new to this, and you get less smoke in your kitchen. Choose whatever feels easier for your evening, because either way tastes wonderful.

Variations and Personal Touches

I've swapped chicken sausage when I wanted something lighter, tossed in diced bell peppers for color, and once added a pinch of cayenne when I was in a spicy mood. You can also use different vegetables if that's what you have on hand—zucchini, snap peas, and mushrooms all work beautifully.

  • For extra heat, add cayenne pepper or a dash of hot sauce mixed into the oil before tossing.
  • Serve alongside crusty bread to soak up every drop of the flavorful juices trapped in the foil.
  • Make sure to use heavy-duty foil so it doesn't tear open and spill everything onto your baking sheet.
Flavorful Cajun-style onion boil shrimp and sausage foil packets featuring smoky sausage, succulent shrimp, and hearty potatoes, grilled or baked. Save
Flavorful Cajun-style onion boil shrimp and sausage foil packets featuring smoky sausage, succulent shrimp, and hearty potatoes, grilled or baked. | pulseoven.com

This recipe became my go-to when I realized that good food doesn't have to be complicated, and some of the best meals come wrapped in foil and served with a little ceremony. I hope it becomes something you make again and again.

Recipe FAQs

Can I cook these packets on a grill?

Yes, grilling the foil packets over medium-high heat for 20-25 minutes works great and adds a subtle smoky flavor.

What type of sausage works best?

Smoked sausage adds a rich, savory element, but you can substitute with chicken sausage for a lighter option.

How do I know when the shrimp and potatoes are done?

Shrimp should be opaque and firm, and potatoes tender when pierced with a fork after cooking.

Can I add extra vegetables to the packets?

Yes, bell peppers or additional garlic are excellent additions to enhance flavor and color.

Is there a way to add more heat to this dish?

Adding a pinch of cayenne pepper or dashes of hot sauce before sealing packs increases the spice level.

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Onion Shrimp Sausage Foil

Savory shrimp and sausage with corn and potatoes, seasoned with Cajun spices and roasted in foil.

Prep Time
20 min
Cook Time
25 min
Overall Time
45 min
Created by Henry Baker


Skill Level Easy

Cuisine American Southern Cajun

Makes 4 Portions

Diet Preferences No Dairy

What You'll Need

Seafood & Meats

01 1 pound large raw shrimp, peeled and deveined
02 12 ounces smoked sausage, sliced into 1/2-inch rounds

Vegetables

01 1 large onion, cut into wedges
02 2 ears corn, each cut into 4 pieces
03 1 pound baby potatoes, halved or quartered if large
04 2 cloves garlic, minced

Seasoning & Oils

01 2 tablespoons olive oil
02 2 teaspoons Old Bay or Cajun seasoning
03 1/2 teaspoon smoked paprika
04 1/2 teaspoon black pepper
05 1/2 teaspoon salt
06 1 lemon, sliced

Optional Garnishes

01 2 tablespoons fresh parsley, chopped
02 Additional lemon wedges for serving

How to Make

Step 01

Preheat cooking surface: Preheat oven to 425°F or preheat grill to medium-high heat.

Step 02

Combine protein and vegetables: In a large bowl, combine shrimp, sausage, onion, corn, potatoes, and garlic.

Step 03

Season and coat mixture: Drizzle with olive oil, then sprinkle with Old Bay or Cajun seasoning, smoked paprika, salt, and black pepper. Toss until everything is evenly coated.

Step 04

Prepare foil packets: Cut 4 large sheets of heavy-duty aluminum foil, each approximately 12 by 16 inches.

Step 05

Distribute ingredients: Divide the mixture evenly among the foil sheets, placing in the center of each. Top each with lemon slices.

Step 06

Seal foil packets: Fold the long sides of the foil over the mixture, then roll up the ends tightly to seal and create packets.

Step 07

Cook packets: Arrange packets on a baking sheet for oven cooking or directly on the grill. Bake or grill for 20 to 25 minutes, until potatoes are tender and shrimp are cooked through.

Step 08

Finish and serve: Carefully open packets while watching for steam. Garnish with fresh parsley and serve with extra lemon wedges if desired.

Tools Needed

  • Large mixing bowl
  • Heavy-duty aluminum foil
  • Baking sheet or grill
  • Tongs

Allergens

Always review each ingredient for allergens. Ask a healthcare provider if you're not sure.
  • Contains shellfish (shrimp)
  • Sausage may contain soy or gluten—check labels if you have sensitivities

Nutrition Info (per serving)

Use this nutrition estimate as a guideline, but be sure to verify with a health expert if needed.
  • Calories: 420
  • Fats: 21 g
  • Carbohydrates: 30 g
  • Proteins: 27 g

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