Seafood Lasagna White Sauce

If you adore the marriage of creamy béchamel with the ocean’s finest, Seafood Lasagna White Sauce is your next kitchen triumph. Layers of tender shrimp and scallops nestled in that silky white sauce mingle perfectly with ricotta, mozzarella, and Parmesan, while bright tomato notes and herbs peek through every bite. It’s a coastal twist on classic lasagna that’s bound to impress at family dinners or cozy weeknight gatherings—trust me, you’ll want to dive right in!

Key Ingredients

Before assembling your seafood lasagna, let’s gather the essentials that make each layer shine:

• 12 lasagna noodles: Provides the sturdy pasta foundation for all those rich layers.
• 2 tablespoons olive oil: Warms through sautéing veggies and seafood without overpowering flavors.
• 1 medium onion, finely chopped: Builds a sweet, savory base when softened.
• 3 cloves garlic, minced: Infuses every layer with aromatic depth.
• 1 red bell pepper, diced: Adds sweetness and vibrant color to the seafood mix.
• 1 cup fresh mushrooms, sliced: Brings tender earthiness to each bite.
• 1 pound shrimp, peeled and deveined: Offers succulent seafood flavor that pairs perfectly with creamy sauce.
• 1 pound scallops, cleaned and chopped: Delivers delicate, tender shellfish in every layer.
• 1 can (14.5 ounces) diced tomatoes, drained: Introduces bright acidity and tomato texture.
• 1 teaspoon dried basil: Lends a warm, herbal Italian note.
• 1 teaspoon dried oregano: Complements basil with classic Mediterranean flavor.
• 1 tablespoon lemon juice: Brightens the seafood and balances the richness.
• Salt and pepper to taste: Essential for seasoning and rounding out flavors.
• 2 cups ricotta cheese: Creates a creamy, rich layer that binds the pasta.
• 1 egg: Helps set the ricotta filling for easier slicing.
• 2 cups shredded mozzarella cheese: Melts beautifully to give that iconic cheesy pull.
• 1 cup grated Parmesan cheese: Forms a golden, savory crust on top.
• 4 cups béchamel sauce (homemade or store-bought): The luscious white sauce that holds everything together.

How To Make Seafood Lasagna White Sauce

This Seafood Lasagna White Sauce comes together in simple stages: boiling noodles, sautéing veggies and seafood for maximum flavor, blending the ricotta filling, building layers in a baking dish, and baking to cheesy perfection. Let’s dive into each step to ensure a creamy, tender lasagna that highlights every ingredient.

1. Preheat your oven to 375°F (190°C), ensuring it's hot enough for a golden top.

2. Cook the lasagna noodles according to package instructions until al dente. Drain and set aside on a lightly oiled sheet to prevent sticking.

3. In a large skillet, heat the olive oil over medium heat. Add the chopped onion and garlic, sautéing until softened and translucent, about 3–4 minutes.

4. Add the diced red bell pepper and sliced mushrooms, cooking an additional 3–4 minutes until the vegetables release their moisture and soften.

5. Stir in the shrimp and scallops, cooking for 5–7 minutes until they’re just opaque and cooked through; avoid overcooking to keep them tender.

6. Add the drained diced tomatoes, dried basil, dried oregano, and lemon juice. Season with salt and pepper, then cook 2–3 more minutes to marry the flavors. Remove from heat.

7. In a medium bowl, combine ricotta cheese with the egg, whisking until smooth and well combined.

8. To assemble, spread a thin layer of béchamel sauce on the bottom of a 9×13-inch baking dish.

9. Layer 3 lasagna noodles over the sauce, then spread 1/3 of the ricotta mixture evenly over the noodles.

10. Spoon half of the seafood mixture over the ricotta, drizzle another layer of béchamel, and sprinkle 1/3 of the mozzarella cheese.

11. Repeat: noodles, ricotta mixture, remaining seafood, béchamel sauce, and another third of the mozzarella.

12. Finish with a final layer of noodles, a generous layer of béchamel, then top with the remaining mozzarella and all the Parmesan.

13. Cover with aluminum foil and bake 25 minutes to steam the layers.

14. Remove foil and bake an additional 15 minutes, until the top is golden and bubbly.

15. Let the lasagna rest for about 10 minutes before slicing—this helps it set for perfect portions.

Serving Suggestions

Elevate your Seafood Lasagna White Sauce experience with these complementary ideas:

• Serve alongside a lemon-infused arugula salad: Toss peppery greens with olive oil, lemon juice, salt, and pepper for a zesty counterpoint.
• Pair with garlic-roasted broccoli: Roast florets with olive oil, minced garlic, salt, and pepper until lightly charred.
• Offer slices of warm crusty bread: Perfect for mopping up any leftover béchamel and tomato juices.
• Garnish each portion with fresh chopped parsley or dill: Adds a pop of color and bright herb notes.

Tips For Perfect Seafood Lasagna White Sauce

Mastering this decadent dish is easier with a few friendly pointers:

• For an added touch of flavor, consider incorporating fresh herbs like parsley or dill into the seafood mixture before layering.
• This dish can be prepared in advance and stored in the refrigerator for up to 24 hours before baking—perfect for busy schedules.
• Seafood varieties can be adjusted based on personal preference; substitute crab, lobster, or other shellfish to make it your own.
• A simple green salad pairs beautifully with this decadent dish, enhancing the dining experience with a refreshing crunch.

How To Store It

Whether you have leftovers or plan ahead, proper storage keeps your lasagna tasting fresh and flavorful:

• Refrigerate: Cover the cooled lasagna tightly with foil or plastic wrap. Store in the fridge for up to 3 days, then reheat covered to retain moisture.
• Freeze: Portion the cooled lasagna into airtight containers, layering parchment paper between pieces to prevent sticking. Freeze for up to 2 months.
• Thaw and bake: Move a frozen portion to the fridge overnight. Bake covered at 350°F (175°C) for 25–30 minutes, then uncover for 10 more minutes until bubbly.
• Microwave reheat: Place a single serving in a microwave-safe dish, cover loosely, and heat on medium power in 1-minute intervals until warmed through.

Frequently Asked Questions

Here are quick answers to common questions about making this creamy seafood lasagna:

• How do I ensure the lasagna noodles turn out perfectly al dente?

To achieve perfectly al dente noodles, bring a large pot of salted water to a full boil and add the noodles one by one, stirring gently to prevent sticking. Follow the package instructions closely, usually around 8–10 minutes, and test a noodle around the minimum time— it should be tender but still firm in the center. Drain immediately and rinse under warm water to stop the cooking process, then lay the noodles flat on a lightly oiled baking sheet to prevent them from sticking.

• Can I prepare this seafood lasagna ahead of time, and if so, how should I store it?

Yes, you can assemble the lasagna up to step 12 and then cover it tightly with plastic wrap or aluminum foil. Store it in the refrigerator for up to 24 hours before baking. When you’re ready to bake, remove the wrap, keep the foil cover on for the initial 25 minutes of baking at 375°F (190°C) to retain moisture, then uncover for the remaining 15 minutes to achieve that golden bubbly top.

• What’s the best way to prevent the seafood from becoming rubbery?

To keep shrimp and scallops tender, cook them in the sautéed vegetables for only 5–7 minutes until they turn opaque—overcooking will make them tough. Once they’re just cooked through, immediately remove the skillet from heat, as they will continue to carryover cook slightly while you finish adding the tomatoes, herbs, and lemon juice.

• How can I make my own béchamel sauce, and what consistency should it be?

To make homemade béchamel, melt 4 tablespoons of butter in a saucepan over medium heat, whisk in 4 tablespoons of all-purpose flour and cook for 1–2 minutes without browning. Gradually whisk in 4 cups of warm milk, stirring constantly until the sauce thickens to a smooth, pourable consistency—thick enough to coat the back of a spoon but still run easily. Season with a pinch of nutmeg, salt, and pepper before layering.

• What variations can I use for the seafood and cheese to suit different tastes?

You can swap or add shellfish such as crab meat, lobster chunks, or even firm-fleshed fish like cod or halibut for variety. For cheeses, try substituting half the mozzarella with fontina for a nuttier flavor, or stirring in some shredded Gruyère into the béchamel for extra richness. Just be mindful of salt adjustments if you choose saltier cheeses.

• How should I store and reheat leftovers for best quality?

Cool any leftovers to room temperature, then cover the baking dish tightly or transfer portions to airtight containers. Refrigerate for up to 3 days. To reheat, place a portion in an oven-safe dish, cover with foil, and warm at 350°F (175°C) for 15–20 minutes until heated through. For microwave reheating, cover loosely, heat on medium power in 1-minute increments, stirring or rotating as needed.

• What side dishes and garnishes complement this seafood lasagna?

A crisp green salad dressed with lemon vinaigrette or a simple arugula salad tossed in olive oil and Parmesan balances the richness of the lasagna. Steamed asparagus or garlic-roasted broccoli also pair well. Garnish each serving with freshly chopped parsley or dill and a light drizzle of extra-virgin olive oil or a squeeze of lemon juice to brighten the flavors.

What Makes This Special

Seafood Lasagna White Sauce stands out by marrying silky béchamel with the ocean’s treasures, creating layers of luscious, cheesy goodness that feel indulgent yet balanced. The interplay of tangy tomato, zesty lemon, and fresh herbs elevates every forkful into a mini-celebration. It’s fun to assemble, even more fun to share, and you’ll love printing these directions to save for special occasions or cozy Sundays. If you whip up this lasagna, I’d love to hear how it turned out—drop your questions or feedback in the comments below!

Print Recipe

Seafood Lasagna White Sauce

Author: Sophie Reynolds Courses: Dinner

Difficulty: Intermediate Prep Time 30 mins Cook Time 40 mins Rest Time 10 mins Total Time 1 hr 20 mins

Calories: 650

Description

Creamy béchamel meets succulent shrimp and scallops in warm pasta sheets, each bite melting into cheese-laced layers and bright tomato notes. Golden top crackles with Parmesan, releasing a waft of herbs and sea-kissed aroma.

Ingredients

Scale

1/2x 1x 2x 3x

• 12 lasagna noodles

• 2 tablespoons olive oil

• 1 medium onion, finely chopped

• 3 cloves garlic, minced

• 1 red bell pepper, diced

• 1 cup fresh mushrooms, sliced

• 1 pound shrimp, peeled and deveined

• 1 pound scallops, cleaned and chopped

• 1 can (14.5 ounces) diced tomatoes, drained

• 1 teaspoon dried basil

• 1 teaspoon dried oregano

• 1 tablespoon lemon juice

• Salt and pepper to taste

• 2 cups ricotta cheese

• 1 egg

• 2 cups shredded mozzarella cheese

• 1 cup grated Parmesan cheese

• 4 cups béchamel sauce (homemade or store-bought)

Instructions

1. Preheat your oven to 375°F (190°C).
2. Cook the lasagna noodles according to package instructions until al dente. Drain and set aside.
3. In a large skillet, heat the olive oil over medium heat. Add the chopped onion and garlic, sautéing until softened and translucent, about 3-4 minutes.
4. Add the red bell pepper and mushrooms to the skillet, cooking for an additional 3-4 minutes until the vegetables have softened.
5. Stir in the shrimp and scallops, cooking for 5-7 minutes until they are just opaque and cooked through.
6. Add the drained diced tomatoes, dried basil, dried oregano, lemon juice, and season with salt and pepper. Cook for another 2-3 minutes, then remove from the heat.
7. In a medium bowl, combine the ricotta cheese with the egg, mixing until smooth and well combined.
8. To assemble the lasagna, spread a thin layer of béchamel sauce on the bottom of a 9x13-inch baking dish.
9. Layer 3 lasagna noodles over the sauce, then spread 1/3 of the ricotta mixture over the noodles.
10. Next, add half of the seafood mixture over the ricotta, followed by a layer of béchamel sauce and 1/3 of the mozzarella cheese.
11. Repeat the layering process: noodles, ricotta mixture, remaining seafood mixture, béchamel sauce, and another layer of mozzarella cheese.
12. Finish with a final layer of noodles, béchamel sauce, and sprinkle the top with the remaining mozzarella and all of the Parmesan cheese.
13. Cover the baking dish with aluminum foil and bake for 25 minutes.
14. Remove the foil and bake for an additional 15 minutes or until the top is golden and bubbly.
15. Allow the lasagna to cool for about 10 minutes before slicing and serving.

Note

• For an added touch of flavor, consider incorporating fresh herbs like parsley or dill.
• This dish can be prepared in advance and stored in the refrigerator for up to 24 hours before baking.
• Seafood varieties can be adjusted based on personal preference; crab, lobster, or other shellfish work well.
• A simple green salad pairs beautifully with this decadent dish, enhancing the dining experience.

Keywords: seafood lasagna, white sauce lasagna, shrimp scallop lasagna, creamy béchamel pasta, cheesy seafood bake, seafood casserole