This is one of those dishes that always makes a backyard gathering feel special. I discovered this combination years ago when I wanted something lighter than steak but still celebratory for a summer evening. The idea was simple: put excellent seafood on skewers, protect the pieces with vegetables, and let high heat do the rest. The result is tender halibut bites, sweet scallops, and plump shrimp threaded with cherry tomatoes, mushrooms and pearl onions. Each skewer gives a variety of textures and a clean briny sweetness that pairs perfectly with bright lemon and a whisper of herbs.

I first served these at my sister's birthday party and watched people trade skewers like party favors. What I love most is how little hands-on time this requires. There is no long marinade or complicated sauce — just a splash of extra virgin olive oil, fresh lemon, and dried herbs. Because you assemble just before grilling, the seafood stays moist and cooks evenly. If you choose wild-caught scallops and firm halibut, the flavor and texture are exceptional. This makes a great celebratory main or large-batch entrée for casual entertaining, and it keeps well when you prepare skewers ahead of time and refrigerate until grilling.

Ingredients

• Halibut or other firm fish (1 pound): Choose fresh, firm steaks for clean slicing. I prefer halibut for its flaky yet firm texture. If unavailable, use cod or salmon. Cut into 1-inch cubes so each piece cooks evenly with shrimp and scallops.
• Sea scallops (about 1 pound, 24 pieces): Look for dry-packed scallops (no phosphates) for best sear and natural sweetness. Remove the small side muscle before cooking for a tender bite.
• Large raw shrimp (about 1 pound, 24 pieces): Use peeled and deveined shrimp, leaving tails on or off per preference. I like them peeled for easier eating, leaving the tails for presentation if you wish.
• Cherry tomatoes (24): Choose firm, ripe tomatoes that will hold together on the grill and burst slightly for a juicy contrast.
• Mushrooms (12): Small button mushrooms or cremini work well. They add an earthy counterpoint and protect delicate fish from direct heat.
• Pearl onions (12): If using frozen, thaw first. Microwave for one minute to soften slightly, which helps them cook through on the grill.
• Extra virgin olive oil (2 to 3 tablespoons): Provides lubrication and flavor. Use a fruity extra virgin olive oil for brightness.
• Lemon (1 large): Zest and juice to finish; the acidity brightens the seafood flavors.
• Dried minced onion (1 tablespoon) and dried tarragon or oregano (1 tablespoon): Use tarragon for a subtle anise note or oregano for Mediterranean warmth.
• Salt and freshly ground black pepper: Season generously just before grilling.
• Bamboo skewers (soaked): Soak for at least 1 hour to prevent burning on the grill. You will need 24 skewers or use two per kabob as directed.

Instructions

Soak the Skewers: At least one hour before assembly, submerge the bamboo skewers in cold water. This is critical to reduce flare-ups and prevent burning while grilling. If you forget, you can wrap the exposed ends in foil, but soaked skewers give the best results. Prepare Ingredients: Pat all seafood dry with paper towels. Microwave pearl onions for 60 seconds on high if not previously softened. Remove the side muscle from scallops and peel/devein shrimp if needed. Cut halibut into twenty-four roughly 1-inch cubes so they cook in the same time as shrimp and scallops. Assemble Kabobs: Use two soaked skewers per finished kabob so the pieces do not spin when you turn them. Thread the pieces in this order for balance: 1 shrimp, 1 pearl onion, 1 scallop, 1 cherry tomato, 1 halibut piece, 1 mushroom, 1 halibut piece, 1 cherry tomato, 1 scallop, 1 shrimp. Adjust order if desired but aim for alternating seafood and vegetables to ensure even heat exposure. Dress and Season: Drizzle the kabobs with 2 to 3 tablespoons extra virgin olive oil and squeeze fresh lemon juice over the top. Sprinkle the dried minced onion and your choice of dried tarragon or oregano evenly. Finish with a generous pinch of salt and a few grinds of black pepper. The oil and acid help create a light glaze and prevent sticking. Grill to Perfection: Preheat the grill to medium-high heat, about 400 to 450 degrees Fahrenheit. Place kabobs directly on the grates and grill for approximately 4 to 6 minutes per side. Watch for opaque scallops and pink shrimp; halibut should flake slightly but remain moist. Avoid overcooking — seafood continues to cook from residual heat once removed. Finish and Serve: Transfer kabobs to a warmed platter, squeeze an extra touch of lemon, and optionally sprinkle with chopped fresh parsley for color. Serve immediately while the seafood is warm and juicy. Offer lemon wedges and a simple herb mayo or tzatziki on the side if desired.

Storage Tips

Store any leftover cooked kabobs in an airtight container in the refrigerator for up to two days. If you need to keep prepared skewers longer, assemble them raw and tightly wrap in plastic wrap before refrigerating for no more than 24 hours. For longer storage, slide the pieces off skewers and freeze seafood separately in a single layer on a baking sheet, then transfer to freezer bags for up to three months. When reheating cooked skewers, use a 350 degrees Fahrenheit oven for 6 to 8 minutes to warm gently without overcooking.

Ingredient Substitutions

If halibut is costly or unavailable, use cod, mahi-mahi, or a firm salmon steak, cutting to uniform cubes. Swap tarragon for fresh dill or basil for a fresher herbal profile; reduce quantity when using fresh herbs to avoid overpowering the seafood. If scallops are scarce, double up on shrimp or add chunked firm-fleshed fish. For a gluten-free glaze or extra flavor add a tablespoon of low-sodium soy sauce or tamari to the olive oil and lemon mixture for an umami boost.

Serving Suggestions

Serve kabobs family-style on a long platter with lemon wedges and a sprinkling of chopped parsley for color. Pair with a light orzo salad dressed with lemon and olive oil, grilled asparagus, or a green bean almondine. For a Mediterranean theme, add a chickpea salad with cucumber, tomatoes and feta. A crisp white wine like Albariño or a citrus-forward Sauvignon Blanc complements the briny seafood exceptionally well.

Cultural Background

Skewered foods are universal, appearing across Mediterranean, Middle Eastern and East Asian cuisines. These mixed seafood skewers take inspiration from Mediterranean grilling traditions where seafood is simply seasoned and cooked over high heat. Using citrus and olive oil highlights the freshness of seafood in a manner common to coastal cooking, and inserting vegetables on the skewer is a practical technique to balance heat and texture, ensuring a pleasing bite every time.

Seasonal Adaptations

In summer, add charred summer squash slices or blistered shishito peppers between seafood pieces. In spring, swap mushrooms for tender asparagus tips. For winter entertaining, use heartier root vegetables par-cooked first, and serve with a warm lemon-caper butter sauce on the side. Adjust grill time according to seasonal ambient temperature; colder evenings may require slightly longer cooking and preheating the grill well.

Meal Prep Tips

For efficient meal prep, cube fish and shell, peel and devein shrimp in advance, then store in a single layer in the refrigerator for up to one day. Soak skewers an hour before assembling and assemble up to two hours ahead so flavors meld without the seafood sitting too long. Transport assembled skewers on a rimmed tray covered tightly with plastic wrap for outdoor grilling at a picnic or potluck. Keep a cooler with ice if traveling to avoid temperature abuse.

These kabobs are dependable, crowd-friendly and a joy to share. Whether you grill for family or guests, they reliably deliver big flavor with minimal fuss. I hope you make them part of your summer rotation and add your own touches to the assembly and seasonings.