Name: Best Italian Seafood Spaghetti Recipe
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: Italian
Ingredients: 2 pounds (960 g) cleaned frozen octopus, thawed and rinsed under cold running water; 2 cups (500 ml) water; 1 bay leaf; 1/2 teaspoon salt (for octopus cooking); 14 oz (420 ml) can whole tomatoes, drained, coarsely chopped, reserve juice; 2 tablespoons (30 ml) chopped fresh basil; 2 tablespoons (30 ml) extra-virgin olive oil; 3/4 cup fresh basil leaves; 1/4 cup (60 ml) extra-virgin olive oil; 1 tablespoon (15 ml) unsalted butter, softened; 1/2 teaspoon salt; 1 pound (480 g) uncooked Italian spaghetti; 6 garlic cloves, peeled; 1/3 cup (80 ml) extra-virgin olive oil; 1 pound (480 g) large shrimp in the shell, peeled leaving tail fan attached, deveined; 3/4 pound (360 g) mussels, rinsed; 3/4 pound (360 g) baby squid, cleaned, cut into 1/4-inch (0.5 cm) rounds, tentacles left whole

Jump to Recipe· 4.3 from 13 reviews

I absolutely love diving into a bowl of seafood pasta, and this Best Italian Seafood Spaghetti Recipe is one of my all-time favorites to make and share. The vibrant flavors of tender shrimp, briny mussels, and perfectly cooked spaghetti tossed in a rich tomato sauce with fresh basil purée always make me feel like I’m dining by the Italian coast. It’s easy to prepare, yet feels incredibly special—exactly the kind of dish I crave when I want something comforting but elegant. Trust me, once you try this recipe, it might just become your go-to seafood pasta, too.

Why You’ll Love This Best Italian Seafood Spaghetti Recipe

What I love most about this recipe is how the flavors come together so beautifully without requiring hours in the kitchen. The sweetness of the shrimp and mussels paired with the tangy, slightly sweet tomato sauce creates a taste that’s fresh and unforgettable. Then the fresh basil purée adds a wonderful herbaceous note that lifts the entire dish. I find each bite perfectly balanced and satisfying.

Another reason I keep returning to this recipe is how simple it is to prepare. Even on busy weeknights, I can get this seafood spaghetti on the table in about 30 minutes. It’s the perfect dish to impress guests or savor as a cozy family dinner. Plus, it feels special enough for holidays or celebrations without the fuss, making it a recipe I highly recommend for many occasions.

Ingredients You’ll Need

The image shows a white marbled surface with various ingredients neatly arranged in separate white bowls and small containers. There is a bowl of raw shrimp with shells, a bowl of uncooked mussels with dark shells, a plate of uncooked scallops, and a plate of raw squid rings and tentacles. A white cup holds bright red tomato sauce, and some uncooked yellow spaghetti pasta is placed diagonally on the surface. Small white bowls contain chopped garlic and a yellow liquid, possibly olive oil. A wooden board holds two small white bowls with black pepper and salt, and a small container of yellow liquid, likely butter. Fresh green parsley is placed near the bottom of the image. The photo taken with an iphone --ar 4:5 --v 7

The ingredients for this Best Italian Seafood Spaghetti Recipe are straightforward but essential, each playing a key role in flavor, texture, or color. From fresh seafood to ripe tomatoes and fragrant basil, you’ll find everything works together effortlessly to create a vibrant and hearty dish.

Shrimp: Choose large shrimp, peeled and deveined, for succulent bites that cook quickly.
Mussels: Fresh mussels add a lovely briny depth to the sauce and texture to the pasta.

Italian spaghetti: This pasta holds the sauce beautifully and provides the perfect base.
Whole canned tomatoes: Use high-quality tomatoes for a rich, fresh-tasting sauce.
Fresh basil: Essential for the basil purée, it adds freshness and a touch of herbal brightness.

Extra-virgin olive oil: Adds richness and helps meld all the flavors together.
Garlic cloves: They infuse the dish with a warm, aromatic base flavor.
Butter: Adds creaminess to the basil purée and smooths out the sauce.

Salt and pepper: To taste, enhancing all the natural flavors perfectly.
Optional baby squid: For added seafood variety and texture, if you want to elevate the dish further.

Directions

Step 1: Begin by preparing the octopus if you choose to include it. Combine it with water and a bay leaf in a pressure cooker, season with salt, and cook under high pressure for 10 minutes. Once done, cool it quickly under cold water, then chop into bite-sized pieces. Set aside the cooking liquid as it will enrich your sauce.

Step 2: Next, make your tomato sauce by heating a saucepan over medium heat. Add the canned whole tomatoes along with their juice, fresh basil, and olive oil. Simmer the mixture uncovered for 20 to 25 minutes, stirring occasionally and mashing the tomatoes until the sauce thickens and reduces to about three quarters of a cup. Remove from heat and let it cool slightly.

Step 3: While the tomato sauce simmers, prepare the basil purée. Blend fresh basil leaves with extra-virgin olive oil, softened butter, and a pinch of salt until you get a smooth, vibrant green mixture. Set this aside to use as a flavorful finishing touch later.

Step 4: Bring a large pot of salted water to a boil and cook the spaghetti until al dente according to the package instructions – usually around 8 to 10 minutes. Reserve some pasta water before draining, as this can help loosen the sauce if needed.

Step 5: In a large skillet, heat olive oil over medium heat, then add garlic cloves and sauté until fragrant but not browned. Add the shrimp, mussels, baby squid (if using), and the chopped octopus. Cook, stirring frequently, until the shrimp turn pink and the mussels open up, about 5 to 7 minutes. Discard any mussels that don’t open.

Step 6: Pour in the prepared tomato sauce along with some reserved cooking liquid or pasta water to achieve desired consistency. Toss everything together and simmer for a couple of minutes to let the seafood soak up all those wonderful flavors.

Step 7: Add the drained spaghetti directly into the skillet and gently toss to coat every strand with the rich tomato and seafood sauce. Adjust salt and pepper to taste.

Step 8: Plate the spaghetti, then drizzle the basil purée over the top or swirl it in as you serve to add a fresh, herbal punch that complements the seafood perfectly.

Servings and Timing

This Best Italian Seafood Spaghetti Recipe serves 4 generously, making it perfect for family dinners or small gatherings. Prep time is about 10 minutes, mainly for washing and chopping ingredients. The cook time takes approximately 20 minutes between preparing the seafood and simmering the sauce, so the total time from start to finish is around 30 minutes. No additional resting or cooling time is necessary—this dish is best enjoyed immediately while warm and fragrant.

How to Serve This Best Italian Seafood Spaghetti Recipe

A large white plate with blue dots around the edge holds a generous serving of spaghetti mixed with a reddish-orange tomato sauce. Scattered throughout the pasta are dark black mussel shells filled with orange mussel meat, bright orange shrimp, small pieces of golden scallops, and baby octopus tentacles. Finely chopped green herbs are sprinkled over the top. Two silver forks with detailed handles rest on the left side of the plate. Fresh green parsley leaves decorate one corner of the plate. The plate is placed on a white marbled surface with a small bowl of green herbs and a yellow cloth nearby. Photo taken with an iphone --ar 4:5 --v 7

Whenever I serve this seafood spaghetti, I like to pair it with a light side salad dressed in lemon vinaigrette to cut through the richness of the dish. A rustic garlic bread also makes a fantastic accompaniment, offering a crispy texture that’s perfect for mopping up the delicious sauce. The contrast in textures and tastes really makes the meal complete.

For garnishing, I often finish with freshly grated Parmesan or a sprinkle of red chili flakes for a bit of heat, depending on my mood or guests’ preferences. Presentation-wise, serving on large shallow bowls with a sprinkle of basil leaves adds a beautiful pop of green and a touch of freshness that guests always appreciate.

As for drinks, this recipe pairs beautifully with chilled white wines such as Pinot Grigio or a crisp Sauvignon Blanc, both of which complement the seafood and enhance the herbal notes of the basil. If you prefer non-alcoholic options, a sparkling water with a twist of lemon or a light iced herbal tea works wonderfully. I find this meal perfect for cozy family dinners, special occasions, or even an upscale weeknight treat since it feels celebratory without being complicated.

Variations

I love how adaptable this Best Italian Seafood Spaghetti Recipe is and often tweak it to fit what I have on hand or my dietary needs. For instance, if fresh mussels aren’t available, I substitute with clams or scallops which also bring their unique texture and flavor to the dish. You can also use fresh tomatoes in the summer for an even brighter sauce.

If you’re looking for a gluten-free option, simply use gluten-free spaghetti or linguine, which cooks just as well and lets the seafood shine. For those who prefer a lighter or vegan twist, you can omit the seafood and make a medley of grilled vegetables with the tomato sauce and basil purée, adding plant-based protein like chickpeas or tofu for heartiness.

When it comes to cooking methods, if you don’t have a pressure cooker, you can simmer octopus gently on the stove until tender, though it takes longer (about 45 minutes). For a smoky flavor, grilling the seafood before adding it to the sauce adds a delicious depth and works especially well with shrimp and squid.

Storage and Reheating

Storing Leftovers

If you have any leftovers, I recommend transferring the seafood spaghetti to an airtight container and refrigerating it promptly. It will keep well for up to 2 days. Using a glass or BPA-free plastic container with a tight seal helps maintain freshness and prevents any odors from seeping into your fridge.

Freezing

This dish freezes okay but I prefer to freeze just the tomato sauce with seafood separately, leaving the pasta aside because spaghetti can become mushy when frozen and reheated. Store the sauce in a freezer-safe container or heavy-duty freezer bags with as much air removed as possible. It will keep in the freezer up to 3 months. When you’re ready, thaw overnight in the fridge and reheat gently.

Reheating

The best way to reheat this seafood spaghetti is on the stovetop over low heat, adding a splash of water, broth, or reserved pasta water to loosen the sauce and prevent sticking. Avoid microwaving if possible, as that can dry out the seafood and make the pasta tough. Gently warming helps preserve the texture and brings back the fresh flavors, making leftovers almost as delightful as the first serving.

FAQs

Can I use fresh tomatoes instead of canned for this recipe?

Absolutely! Fresh ripe tomatoes can add a brighter, fresher flavor. Just blanch and peel them first, then chop coarsely before simmering to make your sauce. You might need a little longer simmering time to reduce excess moisture.

Is it possible to make this recipe without a pressure cooker?

Yes! While a pressure cooker speeds up cooking octopus, you can simmer it gently in a covered pot with water and a bay leaf until tender, which usually takes about 40 to 45 minutes. This slower method still yields tender octopus but requires more time and attention.

How can I tell when the mussels are cooked properly?

Mussels are cooked when their shells open wide, usually within 5 to 7 minutes of cooking in a hot pan or sauce. Any mussels that remain closed after cooking should be discarded as they may not be safe to eat.

Can I prepare the sauce and basil purée ahead of time?

Definitely! Making the sauce and basil purée a day ahead saves time and allows the flavors to deepen. Store each in separate airtight containers in the fridge and bring to room temperature before combining with freshly cooked seafood and pasta.

What if I want more spice in this dish?

I love adding chili flakes or fresh chopped chili when sautéing the garlic or as a garnish for a little heat. Alternatively, a dash of hot paprika or a drizzle of chili-infused olive oil can give the dish a flavorful kick without overpowering the seafood.

Conclusion

I can’t recommend this Best Italian Seafood Spaghetti Recipe enough—it’s the kind of dish that makes you feel like you’re dining at a seaside trattoria, all from the comfort of your own kitchen. It’s flavorful, quick to make, and endlessly satisfying. I hope you enjoy preparing and sharing it with your loved ones as much as I do. Give it a try soon; your taste buds will thank you!