Best Grilled Seafood Skewers for Summer BBQ (Garlic Butter & Cajun Style)

Grilled Seafood Skewers are the pinnacle of easy summer cooking when it is too hot to babysit a stove, but you still want something that feels a little special. I make them when friends text, “We are bringing chips, what should we do for the main?” and I need a plan fast. Seafood cooks quick, the cleanup is simple, and everyone gets their own little skewer like it is a treat. The best part is you can go cozy with garlic butter or loud and spicy with Cajun, depending on the mood. If you have ever overcooked shrimp and felt sad about it, don’t worry, I have a few foolproof tricks for you.

Best Seafood for Skewers: Shrimp, Scallops, Salmon, and Firm Fish Options

For Best Grilled Seafood Skewers for Summer BBQ (Garlic Butter & Cajun Style), you want seafood that can handle high heat and being moved around without falling apart. Think sturdy, not delicate.

Shrimp is the easiest win because it is quick, juicy, and people love it. Go for large shrimp, peeled and deveined. Scallops are also amazing, but choose big sea scallops, not tiny bay scallops, or they will overcook before you can blink.

Salmon works surprisingly well on skewers if you cut it into chunky cubes and keep the skin off. For firm white fish, I like mahi mahi, halibut, or cod that feels thick and solid. If your fish is soft and flaky when raw, skip it for skewers and save it for foil packets.

Little personal note: if you are doing a mixed skewer with shrimp and fish, keep pieces similar in size so everything finishes around the same time. That one thing saves so much stress at the grill.

Essential Ingredients for Garlic Butter Grilled Seafood Skewers

Garlic butter is basically magic on the grill. It smells amazing, it browns a little at the edges, and it makes everything taste like you know what you are doing. This is the flavor I make when I want kids and picky eaters to be happy.

Here is what I grab most of the time:

• Butter (salted is fine, just taste before adding extra salt)
• Fresh garlic (minced, not the jarred kind if you can help it)
• Lemon (zest and juice makes it feel bright)
• Parsley (or any fresh herb you have)
• Salt and black pepper
• Optional: a pinch of red pepper flakes for a tiny kick

I melt the butter gently, stir in garlic, then pull it off the heat so the garlic does not burn. Half of it becomes a marinade or brushing sauce, and the other half is for finishing right when the skewers come off the grill.

Also, if you are planning a whole grill spread, I love pairing seafood with something fun and saucy like Bang Bang Chicken Skewers for the people who swear they “aren’t really seafood people.” It balances the table nicely.

Homemade Marinades for Grilled Seafood (Lemon Garlic, Cajun, and Herb Variations)

I keep marinades simple because seafood does not need a long soak. Too much time in acid can turn shrimp kind of mushy, and nobody wants that.

My go to marinades

Lemon garlic: olive oil, lemon juice, lemon zest, garlic, salt, pepper, and a little parsley. Marinate 15 to 25 minutes.

Cajun: olive oil, a Cajun seasoning blend, a tiny spoon of brown sugar (helps browning), garlic powder, and a squeeze of lime. Marinate 15 to 20 minutes.

Herb: olive oil, chopped basil or dill, garlic, lemon zest, salt, pepper. Marinate 15 to 30 minutes.

If you want to prep ahead, mix the marinade earlier in the day and keep it in the fridge, then toss the seafood right before grilling. Quick and easy.

And yes, I have done the “oops, we forgot dinner” routine and made a fast side in the air fryer while the grill heats up. These air fryer chicken mozzarella wraps are a lifesaver on chaotic days, even if tonight is a seafood night.

Best Seasonings for Seafood Skewers: Cajun, Creole, Old Bay, and Spicy BBQ Blends

If you are chasing bold flavor, seasoning blends are your best friend. For Best Grilled Seafood Skewers for Summer BBQ (Garlic Butter & Cajun Style), I usually do one batch garlic butter and one batch Cajun, because people like options and it makes you look extra prepared.

Seasoning options that actually taste good on seafood:

Cajun: spicy, smoky, and perfect with butter or oil.

Creole: similar vibe, often a bit more herbal and balanced.

Old Bay: classic, especially good with shrimp, corn, and potatoes.

Spicy BBQ blend: great if you want that sweet heat vibe, but go light so it does not hide the seafood.

Tip from my own mistakes: if your seasoning mix is salty, do not add extra salt until after grilling and tasting. It is so easy to overdo it.

Tools and Equipment for Perfect Seafood Skewers (Grill, Skewers, and Prep Gear)

You do not need fancy gear, but a few basics make the whole thing smoother.

What I use:

• Skewers: metal is easiest. If using wood, soak 30 minutes so they do not burn.
• Tongs: long ones, because nobody wants to singe their arm hair.
• Grill brush: clean grates mean less sticking.
• Oil and paper towel: to lightly oil the grates right before cooking.
• Instant read thermometer: optional, but helpful for fish.

If you are cooking for a crowd, set up a little tray system. Raw skewers on one tray, cooked on another. It keeps things safe and organized without thinking too hard.

How to Prep Seafood for Grilling (Cleaning, Cutting, and Skewer Assembly Tips)

Seafood prep is where the battle is won. Once you nail this, grilling feels easy.

Shrimp: peel and devein. Leave tails on if you like the look, or remove them for easier eating. Pat dry so seasoning sticks.

Scallops: remove the little side muscle if it is still attached. Pat very dry, seriously. Dry scallops brown better.

Fish: cut into 1 to 1.5 inch cubes. Bigger chunks hold together and stay juicy.

Skewer tip: do not cram pieces too tightly. Leave a tiny gap so heat can get around everything. For shrimp, I like to thread each shrimp twice so it stays in a nice C shape and does not spin when I flip it.

If you are doing a mixed grill night, this is also where I remind you to keep your “fun theme food” separate from seafood. One year I served black pasta at a party and people still talk about it. If you want something playful for a get together, check out Halloween black spaghetti with mozzarella eyeballs. Not a BBQ side exactly, but it is unforgettable.

Step-by-Step Guide to Grilling Seafood Skewers on Gas or Charcoal Grill

This is my simple routine that works on both gas and charcoal.

1) Preheat the grill: medium high heat is the sweet spot.

2) Clean and oil the grates: it prevents sticking and tearing.

3) Lay skewers on the grill: give them space. Crowding leads to steaming instead of grilling.

4) Flip gently: use tongs and turn once or twice, not constantly.

5) Brush at the end: for garlic butter, I brush during the last minute so it smells amazing but does not burn.

If your grill runs hot, just move skewers to a slightly cooler spot to finish. Grilling is not about perfection, it is about paying attention for a few minutes.

Grilling Times and Temperatures for Shrimp, Scallops, and Fish Kabobs

Cooking times depend on size, but here are the numbers I trust. And yes, I have burned shrimp before, so I watch closely now.

Shrimp: usually 2 to 3 minutes per side. They are done when pink and firm, not rubbery.

Scallops: about 2 to 3 minutes per side for big ones. You want a nice golden outside and a tender center.

Fish cubes: often 3 to 4 minutes per side depending on thickness. Fish should flake easily and look opaque.

Temperature notes: fish is great around 145 F in the thickest part. Shrimp and scallops are harder to temp, so go by look and feel, firm and opaque.

Expert Tips for Juicy, Tender, and Flavorful Grilled Seafood Every Time

These are the little things that make your skewers taste like the best thing on the table.

Dry the seafood before seasoning. Moisture is the enemy of browning.

Do not over marinate. 15 to 30 minutes is plenty for most marinades.

Use two zone heat if you can. Hot side to sear, cooler side to finish if needed.

Brush sauce late especially if it has butter, sugar, or lots of garlic. Those burn fast.

Rest for a minute when they come off the grill. Not long, just a quick pause so juices settle.

And if you are making Best Grilled Seafood Skewers for Summer BBQ (Garlic Butter & Cajun Style) for guests, cook one “tester” skewer first. Taste it. Adjust salt or spice. Then cook the rest with confidence.

Flavor Variations: Garlic Butter, Cajun Spicy, Citrus Herb, and Southern Seafood Boil Style

This is where you can make it your own without making life complicated.

Garlic butter: finish with extra lemon and parsley. Simple, rich, and always a hit.

Cajun spicy: brush with a mix of melted butter and Cajun seasoning at the end for glossy, spicy goodness.

Citrus herb: orange or lime zest plus basil or cilantro feels super summery.

Southern seafood boil style: Old Bay or a boil seasoning blend, plus butter and lemon. Add corn pieces on the skewers for the full vibe.

If you like having a non seafood backup that still fits summer cooking, I have also made these air fryer chicken mozzarella wraps for the kids while the adults devour the spicy skewers. Everyone wins.

Best Vegetables and Add-Ins for Seafood Skewers (Corn, Peppers, Onions, and Sausage)

Veggies make skewers feel like a full meal, and they catch all the seasoning drips in the best way.

My favorites: bell peppers, red onion wedges, zucchini chunks, cherry tomatoes, mushrooms, and corn rounds. If you want a heartier skewer, add slices of andouille sausage, especially with Cajun seasoning.

Quick tip: par cook dense veggies like corn for a few minutes first, or cut them smaller so they finish when the seafood does. Seafood does not wait around.

Serving Ideas for Grilled Seafood Skewers (BBQ Platters, Rice, Salads, and Sauces)

I like serving skewers family style on a big platter because it screams summer BBQ without extra work.

Easy ways to serve:

• Over garlic rice or coconut rice
• With a crisp green salad and extra lemon
• On a BBQ platter with corn, watermelon, and potato salad
• With sauces like garlic aioli, spicy mayo, chimichurri, or cocktail sauce

For drinks, I keep it simple, iced tea, sparkling water with citrus, or whatever your group likes. The skewers are the star.

Common Questions

Can I make seafood skewers ahead of time?

Yes. Assemble them a few hours ahead, cover, and refrigerate. I wait to brush on garlic butter until grilling time.

How do I keep shrimp from sticking to the grill?

Clean grates, oil the grates, and do not move the shrimp right away. Once it sears, it releases easier.

Should I use wooden or metal skewers?

Metal is easiest and reusable. Wooden is fine too, just soak it about 30 minutes so it does not burn.

Can I cook these in a grill pan indoors?

You can, especially for shrimp and scallops. Open a window because it can get smoky, and keep the heat medium high.

What is the biggest mistake people make with seafood on the grill?

Overcooking. Seafood goes from perfect to rubbery fast, so stay close and pull it early if you are unsure.

Ready for Your Next Summer Grill Night?

If you remember only a few things, keep the seafood pieces chunky, marinate briefly, and grill hot and fast. Doing half garlic butter and half Cajun makes everyone happy, and it keeps Best Grilled Seafood Skewers for Summer BBQ (Garlic Butter & Cajun Style) feeling fun instead of fussy. If you want more inspiration for your cookout spread, I like browsing Delicious Grilled Seafood Skewers for Perfect Summer Cookouts when I am planning a menu. And if you are in a curious food mood, this story about Pregnant Shrimp: Puerto Vallarta’s Signature Snack – Pinnacle Resorts is such a fun read while you are waiting for the coals to heat up. Now go grab your skewers and make it happen, you are going to smell that garlic butter hitting the grill and feel like summer just officially started.

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