Easy Seafood Lasagna Recipe for a Creamy, Rich Dish

Lasagna already feels like a hug on a plate, but when you layer it with tender shrimp, sweet crab, and buttery scallops in a silky white sauce, it becomes something unforgettable. This seafood lasagna is rich, creamy, and perfect for a cozy weekend dinner or when you want to serve something a little special without fuss.

In this recipe, you’ll see exactly how to bring pasta, béchamel, seafood, and cheese together into one bubbling dish of comfort. If you’d like to skip straight to the full recipe, you can hit the Jump to Recipe button above, or browse the Table of Contents to head straight to the section you need.

Table of Contents

Why You’ll Love This Seafood Lasagna

This isn’t your average lasagna, it’s a creamy, ocean-inspired twist that feels both comforting and elegant. Here’s why it deserves a spot on your table:

• Rich and creamy flavor – The white béchamel sauce perfectly complements the delicate seafood without overpowering it.
• Seafood lover’s dream – Shrimp, crab, and scallops (or lobster if you like) layer together for a mix of sweet, briny flavors.
• Great for gatherings – It serves a crowd and slices beautifully once rested, making it ideal for holidays or dinner parties.
• Make-ahead friendly – You can assemble it the day before or freeze it for a ready-to-bake meal later on.
• Restaurant-style at home – It looks and tastes luxurious, yet the step-by-step process keeps it doable for any home cook.

And let’s be honest: who doesn’t love discovering a seafood dish that impresses without being overly complicated?

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Ingredients for Seafood Lasagna

Here’s everything you’ll need to build this creamy, layered dish:

• Lasagna noodles – 1 pound dried noodles (classic boil or no-boil, see note below).
• Unsalted butter – 4 tablespoons, for starting the béchamel sauce.
• All-purpose flour – 1/4 cup, to thicken the sauce.
• Whole milk – 3 cups, warmed slightly for a smooth béchamel.
• Kosher salt – 1 1/2 teaspoons, divided for sauce and ricotta mixture.
• Black pepper – 1/4 teaspoon, freshly ground.
• Nutmeg – 1/4 teaspoon, just enough to add warmth to the sauce.
• Romano cheese – 1 1/2 cups shredded (or Parmesan if preferred).
• Ricotta cheese – 3 cups, whole-milk for richness.
• Large egg – 1, to bind the ricotta layer.
• Garlic – 4 cloves, finely minced for flavor.
• Shrimp – 1 pound small shrimp, peeled, deveined, and patted dry.
• Lump crab meat – 8 ounces, picked over for shells.
• Scallops or lobster meat – 8 ounces, cooked and chopped.
• Mozzarella cheese – 1 pound, shredded (freshly shredded melts best).
• Olive oil or butter – 1 tablespoon, for sautéing the seafood.
• Fresh parsley or basil (optional) – for garnish or mixing into ricotta.
• Lemon zest (optional) – adds a bright finish to balance the richness.

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How to Make Seafood Lasagna

Follow these steps to layer up the perfect creamy seafood lasagna:

Step 1: Cook the Pasta

Bring a large pot of water to a boil and add a generous tablespoon of salt (this is separate from the measured salt in the ingredients). Cook lasagna noodles until just al dente. Drain, then lay them flat on a parchment-lined baking sheet to prevent sticking.

Step 2: Make the Béchamel Sauce

In a heavy-bottom saucepan, melt the butter over medium heat. Whisk in the flour and cook for about 2 minutes. Slowly stream in the warm milk while whisking constantly. Season with 1/2 teaspoon of the salt, the pepper, and nutmeg. Simmer until the sauce coats the back of a spoon (8–10 minutes). Stir in the Romano cheese, then set aside.

Step 3: Prepare the Seafood

Heat olive oil or butter in a skillet over medium-high heat. Add shrimp and scallops (or lobster) and sauté just until opaque, 2–3 minutes. Transfer to a plate. Gently fold the lump crab meat in with the sautéed seafood so it’s ready for layering. Pat the mixture dry if there is excess moisture.

Step 4: Mix the Ricotta Layer

In a medium bowl, combine ricotta cheese, egg, minced garlic, the remaining 1 teaspoon of salt, a pinch of pepper, and optional parsley or lemon zest. Mix until smooth.

Step 5: Assemble the Lasagna

Grease a 9×13-inch baking dish. Spread a thin layer of béchamel on the bottom. Lay down noodles, spread with the ricotta mixture, then even distribute the shrimp, scallop, and crab mixture. Top with more béchamel and mozzarella. Repeat layers 2–3 times, finishing with béchamel and mozzarella.

Step 6: Bake

Cover the dish with aluminum foil (tent it slightly so cheese doesn’t stick). Bake at 350°F (175°C) for 30 minutes. Remove the foil and bake another 10–15 minutes, until golden and bubbling.

Step 7: Rest and Serve

Let the lasagna rest for at least 15 minutes before slicing. This allows the layers to set and makes for cleaner servings. Garnish with fresh herbs or lemon zest, and serve warm.

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Seafood Lasagna FAQs

Can I use frozen seafood for this recipe?
Yes, but thaw it completely in the refrigerator and pat it very dry before cooking. This prevents excess liquid from making the lasagna watery.

Do no-boil noodles work in seafood lasagna?
They do. Just make sure your béchamel sauce is slightly looser, as the noodles will absorb more liquid while baking.

How can I stop seafood lasagna from turning watery?
The key is to sauté seafood briefly before layering and to drain off any released liquid. Also, let the lasagna rest 15 minutes after baking so layers can set.

Can I make this lasagna ahead of time?
Absolutely. Assemble it up to 24 hours in advance, cover tightly, and refrigerate. Bake just before serving, adding 10–15 minutes extra bake time if starting cold.

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A Delicious Finish

Seafood lasagna is one of those dishes that feels both comforting and elegant, with every bite giving you creamy béchamel, tender seafood, and layers of pasta that hold it all together. It’s perfect for family dinners, holidays, or anytime you want to serve something a little special without making things too complicated.

You may also like:
– Creamy Shrimp Recipe
– Fried Lobster Recipe
– Crispy Baked Crab Cakes

I’d love for you to give this recipe a try and share how it turned out for you. If you have any questions while making it, just drop them in the comments below, I’m always happy to help.

Until then, happy cooking and enjoy every cheesy, seafood-filled slice!