Creamy Seafood Lasagna with Shrimp & Crab

Prep Time: 45 minutes | Cook Time: 1 hour 15 minutes | Total Time: 2 hours (plus 15 minutes resting)
Skill Level: Intermediate | Serves: 8-10 | Cost: $$$

This Creamy Seafood Lasagna is the pinnacle of luxurious comfort food. Layers of tender pasta, sweet shrimp, delicate crab meat, and a trio of rich, creamy sauces come together in a sumptuous, bubbling casserole. A stunning centerpiece for a special occasion or a holiday feast, this dish transforms the humble lasagna into an elegant masterpiece worthy of a fine dining experience. Every bite is a perfect harmony of briny seafood and velvety, herb-infused cheese.

Ingredients

For the Seafood Layer:

1 lb (450g) medium raw shrimp (41-50 count), peeled, deveined, and tails removed
8 oz (225g) high-quality lump crab meat, carefully picked over for shells
2 tablespoons unsalted butter
2 cloves garlic, minced
2 tablespoons dry white wine (like Sauvignon Blanc) or seafood stock
1 tablespoon fresh lemon juice
2 tablespoons chopped fresh parsley
Pinch of cayenne pepper

For the Creamy Ricotta Layer:

1 (15 oz) container whole-milk ricotta cheese
1 large egg
½ cup (50g) grated Parmesan cheese
¼ cup chopped fresh basil
Salt and freshly ground black pepper, to taste

For the Creamy Béchamel Sauce:

5 tablespoons unsalted butter
½ cup (60g) all-purpose flour
4 cups (960ml) whole milk, warmed
1 teaspoon Dijon mustard
½ teaspoon freshly grated nutmeg
Salt and white pepper, to taste

For Assembly:

12 no-boil (oven-ready) lasagna noodles
3 cups (340g) shredded mozzarella cheese, divided
1 cup (100g) shredded Gruyère or Fontina cheese
½ cup (50g) grated Parmesan cheese, for topping
Fresh herbs (dill, chives, or parsley) for garnish

Equipment

Large skillet
Saucepan
Mixing bowls
9×13 inch baking dish
Whisk

Instructions

Part 1: Prepare the Components

1. Cook the Seafood: Pat the shrimp dry and chop into ½-inch pieces. In a large skillet over medium heat, melt butter. Add garlic and cook for 30 seconds until fragrant. Increase heat to medium-high, add shrimp, and cook for 2-3 minutes until just pink and opaque. Deglaze the pan with white wine and lemon juice, scraping up any browned bits. Remove from heat. Gently fold in the crab meat, parsley, and cayenne. Set aside.

2. Make the Ricotta Layer: In a medium bowl, combine ricotta, egg, ½ cup Parmesan, basil, salt, and pepper. Mix until smooth and well combined.

3. Prepare the Béchamel (Cream Sauce): In a medium saucepan over medium heat, melt the 5 tablespoons of butter. Whisk in the flour and cook, stirring constantly, for 2 minutes to form a pale golden roux—do not let it brown. Gradually pour in the warmed milk, whisking vigorously to prevent lumps. Continue to cook, whisking frequently, until the sauce thickens enough to coat the back of a spoon, about 8-10 minutes. Remove from heat. Whisk in Dijon mustard, nutmeg, salt, and white pepper. Set aside, placing a piece of plastic wrap directly on the surface to prevent a skin from forming.

Part 2: Assemble the Lasagna

1. Preheat & Prep: Preheat your oven to 375°F (190°C). Spread a thin layer of the béchamel sauce (about ½ cup) on the bottom of your 9×13 inch baking dish. This prevents sticking and adds moisture.

2. Build Layer 1: Place 4 no-boil lasagna noodles over the sauce (they can slightly overlap). Spread half of the ricotta mixture evenly over the noodles. Spoon one-third of the seafood mixture over the ricotta. Drizzle one-third of the remaining béchamel over the seafood. Sprinkle with 1 cup of the mozzarella and ⅓ cup of the Gruyère.

3. Build Layer 2: Add another layer of 4 noodles. Spread the remaining ricotta mixture, followed by another third of the seafood, another third of the béchamel, and another 1 cup of mozzarella and ⅓ cup Gruyère.

4. The Final Layer: Add the final 4 noodles. Top with the last of the seafood mixture and the last of the béchamel sauce, ensuring all noodles are covered. Sprinkle the remaining 1 cup of mozzarella, the last ⅓ cup of Gruyère, and the ½ cup of grated Parmesan evenly over the top.

Part 3: Bake to Perfection

1. Bake Covered: Cover the lasagna tightly with aluminum foil (tent it slightly so the cheese doesn’t stick). Place the dish on a baking sheet to catch any potential bubble-overs. Bake for 45 minutes.

2. Brown the Top: Carefully remove the foil. Increase the oven temperature to 400°F (200°C). Return the lasagna to the oven and bake uncovered for an additional 15-20 minutes, until the top is golden brown and the edges are bubbling fiercely.

3. The Crucial Rest: Remove the lasagna from the oven and let it rest, uncovered, on a wire rack for at least 15 minutes before cutting. This non-negotiable step allows the layers to set, ensuring you get clean, beautiful squares instead of a soupy slide.

Chef’s Notes & Pro Tips

Seafood Selection: For the crab, fresh-picked lump crab is ideal, but high-quality pasteurized crab from the refrigerated section works well. Do not use canned imitation crab (surimi), as it will ruin the delicate flavor.
Wine Note: The alcohol in the wine cooks off, leaving only flavor. A good substitute is an equal amount of seafood or chicken stock with an extra teaspoon of lemon juice.
Make-Ahead Magic: Assemble the entire lasagna up to 24 hours in advance. Cover and refrigerate. When ready to bake, let it sit at room temperature for 30 minutes, then proceed with the covered baking step, adding 10-15 minutes to the initial bake time.
Noodle Knowledge: No-boil noodles are essential here. The ample moisture from the béchamel and seafood perfectly cooks them through. Do not substitute with regular noodles unless pre-boiled.

Serving Suggestions

Garnish with a flourish of fresh dill, chives, or parsley. Serve with a crisp, bright side to cut through the richness:

A simple arugula salad with lemon vinaigrette.
Steamed asparagus or haricots verts.
A crusty baguette for savoring every last bit of sauce.

The Last Bite: On Indulgence and Occasion

This lasagna is not a Tuesday night supper. It is an event, a celebration in a dish. It speaks to the joy of sourcing beautiful seafood, the quiet focus of building a perfect roux, and the patient anticipation as its aromas fill your kitchen. Unlike its hearty, tomato-based cousin, this seafood lasagna is a study in subtlety and richness—a luxurious tapestry of textures and sea-kissed flavors. It is the culinary equivalent of dressing up, a reminder that some meals are meant to be slow, shared, and deeply savored. It is, in a word, spectacular.

Nutrition Information